Publicaties

Op deze pagina vindt u de vermelding van publicaties met ingang van het jaar 2000.



Budd Clin Chem 2018 IFCC part 3Jeffrey R. Budd, Cas Weykamp, Robert Rej, Finlay MacKenzie, Ferruccio Ceriotti, Neil Greenberg, Johanna E. Camara, Heinz Schimmel, Hubert W. Vesper, Thomas Keller, Vincent Delatour, Mauro Panteghini, Chris Burns, and W. Greg Miller, for the IFCC Working Group on Commutability; IFCC Working Group Recommendations for Assessing Commutability Part 3: Using the Calibration Effectiveness of a Reference Material; Clinical Chemistry 64:3 - 465–474 (2018)

 Den Elzen Clin Chem Lab Med 2018 Kreatinine ReplyWendy P.J. den Elzen, Christa M. Cobbaert and Cas Weykamp; Interference of glucose and total protein on Jaffe based creatinine methods: mind the covolume – reply; De Gruyter; Clin Chem Lab Med 2018; 56(8): e190; https://doi.org/10.1515/cclm-2018-0269

  NUMBER standardized reference intervals_cclm-2018-0462WPJ den Elzen, N Brouwer, MH Thelen, S Le Cessie, IA Haagen, CM Cobbaert; NUMBER: standardized reference intervals in the Netherlands using a 'big data' approach. Clin Chem Lab Med 2018 pii: /j/cclm.ahead-of-print/cclm-2018-0462/cclm-2018-0462.xml. doi: 10.1515/cclm-2018-0462.

Harmonisation of PCR-based detection methods for intestinal protozoa
Theo A. Schuurs, Rob Koelewijn, Eric A.T. Brienen, Titia Kortbeek, Theo G. Mank, Bert Mulder, Foekje F. Stelma, Lisette van Lieshout, Jaap van Hellemond; CCLM

The quest for equivalence of test results: the pilgrimage of the Dutch Calibration 2.000 program for metrological traceabilityRob T.P. Jansen, Christa M. Cobbaert, Cas Weykamp and Marc Thelen; De Gruyter; Clin Chem Lab Med 2018; aop; doi.org/10.1515/cclm-2017-0796


Between-laboratory analysis of IgG antibodies against Aspergillus fumigatus in paired quality control samples
Albert W. van Toorenenbergena and Joep J.M. Kurstjens; allergic alveolitis; aspergillosis; bias; Immuno-CAP; quality control;DOI 10.1515/cclm-2016-1053 Received November 18, 2016; accepted March 7, 2017; previously
published online April 4, 2017; De Gruyter; Clin Chem Lab Med 2017; 55(10): e233–e235

 Analytical performance specifications for external quality assessment – definitions and descriptions Graham R.D. Jones, Stephanie Albarede, Dagmar Kesseler, Finlay MacKenzie, Joy
Mammen, Morten Pedersen, Anne Stavelin, Marc Thelen, Annette Thomas, Patrick J. Twomey, Emma Ventura and Mauro Panteghini, for the EFLM Task Finish Group – Analytical Performance Specifications for EQAS (TFG-APSEQA); De Gruyter; Clin Chem Lab Med 2017; 55(7): 949–955; DOI 10.1515/cclm-2017-0151

 170907 Creatinine-Ann Clin Biochem 2016 (3)
Nuthar Jassam, Cas Weykamp, Annette Thomas, Sandra Secchiero, Laura Sciacovelli, Mario Plebani, Marc Thelen, Christa Cobbaert, Carmen Perich, Carmen Rico´s, Faria A Paula and Julian H Barth; Post-standardization of routine reatinine assays: are they suitable for clinical applications; Annals of Clinical Biochemistry; DOI 10.1177/0004563216664541

 Helander Clin Chim Acta 2016
Anders Helander, Jos Wielders, Raymond Anton, TorstenArndt, Vincenza Bianchi, Jean Deenmamode, Jan-Olof Jeppsson, John B.Whitfield, Cas Weykamp, François Schellenberg, on behalf of the International Federation of Clinical Chemistry and Laboratory Medicine Working Group on Standardisation of Carbohydrate-Deficient Transferrin (IFCCWG-CDT); Standardisation and use of the alcohol biomarker carbohydrate-deficient transferrin (CDT); Elsevier B.V.; DOI 10.1016/j.cca.2016.05.016

 Schellenberg Clin Chim Acta 2016
François Schellenberg, JosWielders, Raymond Anton, Vincenza Bianchi, Jean Deenmamode, Cas Weykamp, John Whitfield, Jan-Olof Jeppsson, Anders Helander; IFCC approved HPLC reference measurement procedure for the alcohol consumption biomarker carbohydrate-deficient transferrin (CDT): Its validation and use; Elsevier B.V.; DOI 0.1016/j.cca.2016.12.02

 Weykamp CCLM 2016
Cas Weykamp, Sandra Secchiero, Mario Plebani, Marc Thelen, Christa Cobbaert, Annette Thomas, Nuthar Jassam, Julian H. Barth, Carmen Perich, Carmen Ricos and Ana Paula Faria; Analytical performance of 17 general chemistry analytes across countries and across manufacturers in the INPUtS project of EQA organizers in Italy, the Netherlands, Portugal, United Kingdom and Spain; De Gruyter; Clin Chem Lab Med 2017; 55(2): 203–211; DOI 10.1515/cclm-2016-0220

 CCLM-2016-0952_Cobbaert_DEF Prof. Dr. C.M. Cobbaert, Department of Clinical Chemistry and Laboratory Medicine, Leiden University Medical Center; Time for a holistic approach and standardization education in laboratory medicine; De Gruyter; Clin Chem Lab Med 2016; aop; DOI 10.1515/cclm-2016-0952


MUSE 2017 cclm-2016-0970Dr. M.H.M. Thelen; SKML, Organisation for Quality Assurance of Medical Laboratory Diagnostics, Radboud University, Nijmegen and Laboratory for Clinical Chemistry, Amphia Hospital, Breda, The Netherlands - Dr. R.T.P. Jansen, Dhr. R.J.G.M. Meijer, Drs. H. Steigstra; SKML, Organisation for Quality Assurance of Medical Laboratory Diagnostics, Radboud University, Nijmegen the Netherlands - Dr. C.W. Weykamp; SKML, Organisation for Quality Assurance of Medical Laboratory Diagnostics, Radboud University, Nijmegen and Laboratory for Clinical Chemistry, Queen Beatrix Hospital, Winterswijk, The Netherlands - Prof. Dr. C.M. Cobbaert; SKML, Organisation for Quality Assurance of Medical Laboratory Diagnostics, Radboud University, Nijmegen and Laboratory Medicine, Leiden University Medical Center, Leinden, The Netherlands - Expressing analytical performance from multisample evaluation in laboratory EQA - De Gruyter - Clin. Chem. Lab. Med. 2017; aop - DOI 10.1515/cclm-2016-0970


Clinical Chemistry and Laboratory Medicine (CCLM)] A multicenter comparison of whole blood vitaminB6 assays
Bertrand D. van Zelst, Roseri J.A.C. Roelofsen de Beer, Marjolein Neele, Snježana Kos,  Ido P. Kema, Frans P.W. Tegelaers, Christa M. Cobbaert, Cas W. Weykamp and Robert de Jonge  - De Gruyter - Clin Chem Lab Med 2016; 54(4): 609–616
- DOI 10.1515/cclm-2015-0385

Clinical Chemistry and Laboratory Medicine (CCLM)] Creatinine, Jaffe, and glucose- anotherinconvenient truth
Cas Weykamp, Aldy Kuypers, Dirk Bakkeren, Paul Franck, Douwe van Loon,  Jacqueline Klein Gunnewiek, Robert de Jonge, Herman Steigstra and Christa Cobbaert - De Gruyter - Clin Chem Lab Med 2015; 53(12): e347–e349 - DOI 10.1515/cclm-2015-0258


Fibrinogen determination according to Clauss: commutability assessment of International and commercial standards and quality control samples
Antonius M.H.P. van den Besselaar, Claudia J.J. van Rijn, Christa M. Cobbaert,
G. Louis A. Reijnierse, Martine J. Hollestelle, René W.L.M. Niessen and Francisca Hudig - De Gruyter - Clin Chem Lab Med 2017; DOI 10.1515/cclm-2016-1088

 2016 INPUtSWeykamp C, Secchiero S, Plebani M, Thelen M, Cobbaert C, Thomas A, Jassam N, Barth JH, Perich C, Ricós C and Faria AP; Analytical performance of 17 general chemistry analytes across countries and across manufacturers in the INPUTtS project of EQA organizers in Italy, the Netherlands, Portugal, United Kingdom and Spain;  2016 INPUtS; DOI10.1515/ cclm-2016-0220

DMB13074Toorenenbergen, A.W, van; Department of Clnical Chemistry, Erasmus University Medical Center, Rotterdam, Netherlands; Diagnostic Microbiology and Infectious Disease 74 (2012) 278–281

anti-HBs_final 1.0.Raven, S. (a,g), Hautvast, J. (a) , Steenbergen, J. van (b,c), Akkermans, R. (a), Weykamp, C. (d,e), Smits, F. (a,1) , Hoebe, C. (f,g), Vossen, A. (h)
a) Academic Collaborative Centre for Public Health AMPHI, Department of Primary and Community Care, Radboud University Nijmegen Medical Centre, The Netherlands

b) Centre for Infectious Disease Control, Netherlands Institute of Public Health and the Environment, Bilthoven, The Netherlands
c) Centre of Infectious Diseases, Leiden University Medical Centre, Leiden, The Netherlands

d) MCA Laboratory, Queen Beatrix Hospital, Winterswijk, The Netherlands
e) On behalf of the Dutch Foundation for Quality Assessment in Medical Laboratories (SKML), The Netherlands
f) Department of Sexual Health, Infectious Diseases and Environmental Health, South Limburg Public Health Service, The Netherlands
g) Department of Medical Microbiology, School of Public Health and Primary Care (CAPHRI), Maastricht University Medical Center (MUMC+), Maastricht, The Netherlands
h) Department of Medical Microbiology, Leiden University Medical Centre, The Netherlands

Journal of Clinical Virology 87 (2017) 17–22

Ther Drug MonitRobijns K, Boone NW, Kuypers AWHM, Jansen RTP, Neef C, and Touw DJ. A Multilaboratory Commutability Evaluation of Proficiency Testing Material for Carbamazepine and Valproic Acid: A Study Within the Framework of the Dutch Calibration 2000 Project.  Ther Drug Monit 2015;37:445–50.

CCAPerich C, Ricós C, Alvarez V, Biosca C, Boned B, Cava F, Doménech MV, Fernández-Calle P, Fernández-Fernández P, García-Lario JV, Minchinela J, Simón M, Jansen R. External quality assurance programs as a tool for verifying standardization of measurement procedures: Pilot collaboration in Europe. Clin Chim Acta. 2013 Nov 28. pii: S0009-8981(13)00443-9. doi: 10.1016/j.cca.2013.11.005. [Epub ahead of print] PubMed PMID: 24291706. Clin Chim Acta 432 (2014) 82-92

CCLMSandberg S, Fraser CG, Horvath AR, Jansen R, Jones G, Oosterhuis W, Petersen PH, Schimmel H, Sikaris K, Panteghini M. Defining analytical performance specifications: consensus statement from the 1st Strategic Conference of the European Federation of Clinical Chemistry and Laboratory Medicine. Clin Chem Lab Med 2015; DOI 10.1515/cclm-2015-0067. Clin Chem Lab Med 2015; 53(6): 833–8

 Cat1_EQA-internat_pilot_study CCA Published
An international pilot study in the framework of the Calibration 2000 projectJansen R, Jassam N, Thomas A, Perich C, Fernandez-Calle P, Faria AP, Correia H, Barth JH, Weykamp C, Cobbaert C, Thelen M, Ricós C. A category 1 EQA scheme for comparison of laboratory performance and method performance: An international pilot study in the framework of the Calibration 2000 project. Clin Chim Acta 432 (2014) 90-98

Quality performance as support for evidence-based guidelinesJassam N, Yundt-Pacheco J, Jansen R, Thomas A, Barth JH. Can current analytical quality performance of UK clinical laboratories support evidence-based guidelines for diabetes and ischaemic heart disease? - A pilot study and a proposal. Clin Chem Lab Med. 2013;51:1579-84. doi: 10.1515/cclm-2012-0840

Defining acceptable limits metrological traceability specific measurandsBais R, Armbruster D, Jansen RT, Klee G, Panteghini M, Passarelli J, Sikaris KA; IFCC Working Group on Allowable Error for Traceable Results (WG-AETR). Defining acceptable limits for the metrological traceability of specific measurands. Clin Chem Lab Med. 2013 May;51:973-9. doi: 10.1515/cclm-2013-0122. PubMed PMID: 23525873

An international pilot study in the framework of the Calibration 2000 projectJansen R, Jassam N, Thomas A, Perich C, Fernandez-Calle P, Faria AP, Correia H, Barth JH, Weykamp C, Cobbaert C, Thelen M, Ricós C. A category 1 EQA scheme for comparison of laboratory performance and method performance: An international pilot study in the framework of the Calibration 2000 project. Clin Chim Acta. 2013 Nov 14. pii: S0009-8981(13)00441-5. doi: 10.1016/j.cca.2013.11.003. [Epub ahead of print] PubMed PMID: 24240021
This article was published in print in 2014

EQA as tool for verifying standardardization measurement proceduresPerich C, Ricós C, Alvarez V, Biosca C, Boned B, Cava F, Doménech MV, Fernández-Calle P, Fernández-Fernández P, García-Lario JV, Minchinela J, Simón M, Jansen R. External quality assurance programs as a tool for verifying standardization of measurement procedures: Pilot collaboration in Europe. Clin Chim Acta. 2013 Nov 28. pii: S0009-8981(13)00443-9. doi: 10.1016/j.cca.2013.11.005. [Epub ahead of print] PubMed PMID: 24291706

 Systematic monitoring of standardization and harmonization status with commutable EQA-samples-Five year experience from the Netherlands
Cobbaert C, Weykamp C, Franck P, De Jonge R, Kuypers A, Steigstra H, Klein Gunnewiek J, Van Loon D, Jansen R. Systematic monitoring of standardization and harmonization status with commutable EQA-samples-Five year experience from the Netherlands. Clin Chim Acta 2012 Oct 2; 414:234-240


Second Round Robin for plasma hepcidin methodsKroot JJC, Van Herwaarden AE, Tjalsma H, Jansen RTP, Hendriks JCM, Swinkels DW. Second Round Robin for plasma hepcidin methods: First steps towards harmonisation. Am. J. Hematol. 2012; 1-7


SKML-congres-Kwaliteit-in-Harmonisatie.pdf Demacker PNM. SKML-congres-Kwaliteit in Harmonisatie. Ned Tijdschr Klin Chem Labgeneesk 2011; 36: 219-223


Proficiency Testing / EQA: Current Challenges and Future Directions Miller WG, Jones GRD, Horowitz GL, Weykamp C. Proficiency Testing/External Quality Assessment: Current Challenges and Future Directions; Clinical Chemistry 57:12 1670–1680 (2011)


Thrombosis Research Van den Besselaar AMHP, Haas FJLM,  Kuypers AWHM. Harmonization and external quality assessment of antithrombin activity. Elsevier: TR-04357; No of Pages 5


Creatinine StandardisationDelanghe JR, Cobbaert C, Harmoinen A, Jansen R, Laitinen P, Panteghini M. Focussing on the clinical impact of standardisation of creatinine measurements. Clin. Chem. Lab. Med. 2011; 49(6): 1-6


Findings 2010 convocation of experts on laboratory qualityCooper G, DeJonge N, Ehrmeyer S, Yundt-Pacheco J, Jansen R, Ricós C, Plebani M. Collective opinion paper on findings of the 2010 convocation of experts on laboratory quality. Clin. Chem. Lab. Med. 2011; 49(5): 793-802


Jansen RTP, Slingerland RJ. SKML-Qualtiy Mark for point-of-care test (POCT) glucose meters and glucose meters for home-use. Clin. Chem. Lab. Med. 2010; 48(7): 1021-1027


De Wit NCJ, Baadenhuijsen H, Weykamp CW, Van 't Sant P. Geen goede commuteerbaarheid voor de ASAT-bepaling van monsters in de SKML-enquête Combi Algemene chemie. Ned. Tijdschr. Klin. Chem. Labgeneesk. 2009; 34: 162-164


Harmonization of fibrinogen assay resultsA.M.H.P. van den Besselaar, F.J.L.M. Haas, F. van der Graaf, A.W.H.M. Kuypers Harmonization of fibrinogen assay results: study within the framework of the   Dutch project ‘Calibration 2000’ - Introduction - The determination - 2008 - Journal compilation 2008 Blackwell Publishing Ltd, Int. Jnl. Lab. Hem. 2009, 31, 513–520


Arndt T, Van der Meijden B, Wielders J. Atypical serum transferrin isoform distribution in liver cirrhosis studied by HPLC, capillary electrophoresis and transferrin genotyping. Clin. Chem. Acta 394 (2008) 42-46


Wielders J, Bergkamp F, Janssen M, Pekelharing J, Van Pelt J, Punt J. Geschiktheid van CDT analysemethoden t.b.v. onderzoek naar chronisch overmatig alcoholgebruik. Richtlijn van de Nederlandse Vereniging voor Klinische Chemie 5 november 2008


Statistiek en Scoresysteem SKML rondzendingen
Steigstra H, Cobbaert C and Baadenhuijsen H. Statistiek en scoresysteem SKML-rondzendingen. Ned. Tijdschr. Klin. Chem. Labgeneesk. 2008; 33: 98-104


Baadenhuijsen H, Weykamp C, Kuypers A, Franck P, Jansen R and Cobbaert C. Commuteerbaarheid van het huidige monstermateriaal in de SKML-rondzendingen van de algemene klinische chemie. Ned. Tijdschr. Klin. Chem. Labgeneesk. 2008; 33: 154-157


Cobbaert C, Weykamp CW, Michielsen ECHJ, Baadenhuijsen H and van Dieijen-Visser MP. Time-dependent instability of cardiac troponins in Human Plasma spiked with NIST Reference Material 2921. Clin. Chem. 2008; 54: 2078-9


Delanghe JR, Cobbaert C, Galteau MM, Harmoinen A, Jansen R, Kruse R, Laitinen P, Thienpont LM, Wuyts B, Weykamp C, Panteghini M. Trueness verification of actual creatinine assays in the European market demonstrates a disappointing variability that needs substantial improvement. An international study in the framework of the EC4 creatinine standardization working group. Clin. Chem. Lab. Med. 2008; 46(9): 1319-1325


Cobbaert C, Michielsen E, Weykamp CW, Baadenhuijsen H and Van Dieijen-Visser. Do NIST SRM 2921 and recombinant cTnI-based serum pools have potential to harmonize cTnI results? Ned. Tijdschr. Klin. Chem. Labgeneesk. 2007; 32: 175-178


Van den Besselaar AMHP, Haas FJLM, Van der Graaf F, Kuypers AWHM. Harmonization of fibrinogen assay results: study within the framework of the Dutch project ‘Calibration 2000’. Int. Jnl. Lab. Hem. 2008; doi:10.1111/j.1751-553X.2008.01070.x


Jansen RTP, Baadenhuijsen H and Willems J. External Quality Assessment in the Netherlands: past, present and future. On the way to trueness assessment. Clinical chemistry behind the Dykes 2007; ISBN-nr: 978-90-76014-16-6


Jansen RTP. EC4: Clinical laboratory globalisation; the EU directives. Ned. Tijdschr. Chem. Labgeneesk. 2007; 32:186-188


Orlando C, Verderio P, Maatman R, Danneberg J, Ramsden S, Neumaier M, Tarascio D, Falbo V, Jansen R, Casini-Raggi C, Malentacchi F, Marubini E, Pizzamiglio S, Vernelen K, Libeer JC, Palicka V, Pazzagli M. EQUAL-qual: A European Program for External Quality Assessment of Genomic DNA Extraction and PCR Amplification. Clinical Chemistry 2007; 53:7 1343-1348


Jansen R, Schumann G, Baadenhuijsen H, Franck P, Franzini C, Kruse R, Kuypers A, Weykamp C, Panteghini M. Trueness verification and traceability assessment of results from commercial systems for measurement of six enzyme activities in serum. An international study in the EC4 framework of the Calibration 2000 project. Clinica Chimica Acta 368 (2006) 160-167


Baadenhuijsen H, Cobbaert CM, Jansen RTP. Kalibratie 2000 en de weerbarstige praktijk aan de hand van de LD-bepaling. Ned. Tijdschr. Klin. Chem. Labgeneesk.  2006; 31:178-179


Van den Besselaar AMHP, Haas FJLM, Kuypers AWHM. Harmonisation of factor VIII:C assay results: study within the framework of the Dutch project ‘Calibration 2000’. Br J Haematol 2006; 132:75-9


Jansen RTP. Kalibratie 2000: de stand van zaken, de relatie met de IVD-richtlijn, de toekomst. Ned. Tijdschr. Klin. Chem. Labgeneesk. 2005; 30: 49-55


Baadenhuijsen H, Kuypers A, Weykamp C, Cobbaert C, Jansen R. External Quality Assessment in The Netherlands: time to introduce commutable survey specimens. Lessons from the Dutch "Calibration 2000" project. Clin. Chem. Lab. Med. 2005: 43(3): 304-307


Jansen RTP. Bias and imprecision in the analytical process-reaching desirable standards of performance. 16th IFCC-FESCC European Congress of Clinical Biochemistry and Laboratory Medicine - EUROMEDLAB 2005. Clinica Chimica Acta, International Journal of Clinical Chemistry and Applied Molecular Biology 2005; 355: S30


Harmonisation of factor VIII:C assay resultVan den Besselaar AMHP, Haas FJLM, Kuypers AWHM. Harmonisation of factor VIII:C assay results: study within the framework of the Dutch project ‘Calibration 2000’. 2005 Blackwell Publishing Ltd, Br J Haem; 132, 75–79


Baadenhuijsen H, Kuypers AWHM, Weykamp CW, Cobbaert CM, Jansen RTP. Het belang van commuteerbare referentiematerialen en externe SKML-monsters bij enzymstandaardisatie. Studie in het kader van het SKML-project "Kalibratie 2000". Ned. Tijdschr. Klin. Chem. Labgeneesk. 2004, vol. 29 no. 5


Baadenhuijsen H, Steigstra H, Cobbaert C, Kuypers A, Weykamp C, Jansen R. Commutability Assessment of Potential Reference Materials Using a Multicenter Split-Patient-Sample Between-Field-Methods (Twin-Study) Design: Study within the Framework of the Dutch Project "Calibration 2000". Clinical Chemistry; 48:9: 1520-1525 (2002)


Cobbaert C, Weykamp C, Baadenhuijsen H, Kuypers A, Lindemans J, Jansen R. Selection, Preparation, and Characterization of Commutable Frozen Human Serum Pools as Potential Secondary Reference Materials for Lipid and Apolipoprotein Measuerments: Study within the Framework of the Dutch Project "Calibration 2000". Clinical Chemistry; 48:9: 1526-1538 (2002)


Gratama JW, Kraan J, Keeney M, Granger V, Barnett D. Reduction of variation in T-cell subset enumeration between 55 laboratories using single-platform, 3- or 4-color flow cytometry based on CD45 & SSC based gating of lymphocytes. Cytometry (Clinical Cytometry) 2002; 50: 92-101


Kuypers A, Baadenhuijsen H, Jansen R. Calibration 2000: EQAS produced commutable secondary calibrators for your laboratory. Clin. Chem. Lab. Med. 2001; 39 Special Supplement pp S1-S448, S68 (Abstract)


Keijzer MH de, Baadenhuijsen H, Jansen RTP. Reactie op "Aanbevelingen van de enzymcommissie NVKC". Ned. Tijdschr. Klin. Chem. 2001; 26: 258 (Letter)


Knubben MJM, Jansen RTP. Het nut van het gebruik van onafhankelijke bloedmonsters bij de kwaliteitsbewaking van bloedgasanalyse. Ned. Tijdschr. Klin. Chem. 2001; 26: 186-189


Klasen IS, Kuypers A, Weykamp C, Lentjes E, Jol-van der Zijde, Backer E, Baadenhuijsen H. Calibration 2000: results of a twin study for ten serum proteins. Ned. Tijdschr. Klin. Chem. 2001; 26: 68


Besselaar AMHP van den, Haas FJLM, Heij-Koene AJM van der. Kalibratie 2000: een tweelingstudie van kandidaat kalibratoren voor bepaling van fibrinogeen, factor VIII en antitrombine. Ned. Tijdschr. Klin. Chem. 2001; 26: 110


Kluin-Nelemans JC, Van Wering ER, Van der Schoot CE, Adriaansen HJ, Van 't Veer MB, Van Dongen JJM, Gratama JW on behalf of the Dutch Cooperative Study Group on Immunophenotyping of Haematological Malignancies (SIHON). SIHONSCORE: a scoring system for external quality control of leukaemia/lymphoma immunophenotyping measuring all analytic phases of laboratory performance. BR. J. Haematol. 2001; 112: 337-343


Metz M de, Berg GA van den, Duijnhoven JLP van, Berends F, Verhoef NJ, Kuijpers AWHM. Calibration 2000 project. Hemocytometry. Ned. Tijdschr. Klin. Chem. 2001; 26: 78


Baadenhuijsen H, Scholten R, Willems HL, Weykamp CW, Jansen RTP. A model for harmonization of routine clinical chemistry results between clinical laboratories. Ann. Clin. Biochem. 2000; 37, 330-337


Baadenhuijsen H, Franck PHF, Kuypers A, Weykamp C, Jansen RTP. Enzymstandaardisatie door kalibratie; een uitgebreide pilot. Ned. Tijdschr. Klin. Chem. 2000; vol. 25, no. 2 (Abstract)


Jansen RTP. The quest for comparability: Calibration 2000. Accreditation and Quality Assurance 2000; 5; 363-366


Jansen RTP, Kuypers AWHM, Baadenhuijsen H, Besselaar AMHP van den, Cobbaert CM, Gratama JW, Klasen IS, Lentjes EGWM, Metz M de, Preijers FWMB, Ross HA, Steigstra H, Weykamp CW. Kalibratie 2000. Ned. Tijdschr. Klin. Chem. 2000; vol. 25, 153-158


Haas FJLM, Besselaar AMHP van den, Heij-Koene AJM van der, Reijnierse GLA. Kalibratie 2000. Ned. Tijdschr. Klin. Chem. 2000; 25: 299-300


Levering WHBM, Van den Beemd R, Te Marvelde JG, Van Beers WAM, Hooijkaas H, Sintnicolaas K, Gratama JW. External quality assessment of flow cytometric HLA-B27 typing. Cytometry (Communications in Clinical Cytometry) 2000; 42: 95-105

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