Gorlaeus Laboratories, Subfaculty of Farmacy, University of Leiden, P.O. Box 9502, 2300, RA Leiden, The Netherlands
M. T. I. W. Schüsler Van Hees
State University of Groningen, The Netherlands
A. Steenhoek
Department of Clinical Pharmacy, Medical Centre Alkmaar, St. Elisabeth Hospital, P.O. Box 502, 1800, AM Alkmaar, The Netherlands
A. Steenhoek
State University of Groningen, The Netherlands
J. J. Keyzer
Central Laboratory for Clinical Chemistry, University Hospital, Oostersingel 59, P.O. Box 30001, 9700, RB Groningen, The Netherlands
J. J. Keyzer
University of Groningen, The Netherlands
A. M. J. Paans
Department of Nuclear Medicine, University Hospital, Oostersingel 59, 9713, EZ Groningen, The Netherlands
A. M. J. Paans
Department of Clinical Pharmacology, State University of Groningen, Bloemsingel 1, 9713, BZ Groningen, The Netherlands
F. M. Haaijer-Ruskamp