1. Department of Clinical Chemistry Rotterdam , Erasmus Medical Center , Zuid-Holland , Netherlands
2. Clinical Pathology , 16268 Hospital Universitario La Paz , Madrid , Spain
3. Faculty of Medicine and Health Sciences , 26660 University of Antwerp , Wilrijk , Belgium
4. 8945 Guys and St Thomas NHS Trust , London , UK
5. IDS , Formerly of Becton and Dickinson UK Ltd , Wokingham , Berkshire , UK
6. 56750 Linkoping Univ , Linköping , Sweden
7. 59837 Royal Alexandra Hospital , Paisley , UK
8. Laboratory Medicine , 16268 La Paz – Cantoblanco – Carlos III University Hospital , Madrid , Spain
9. Institute for Clinical Chemistry and Pathobiochemistry , 9184 Eberhard Karls Universitat Tubingen , Tubingen , Germany
10. Institut für Klinische Chemie , 9184 Klinikum rechts der Isar der Technischen Universitat Munchen , Munchen , Germany