Correspondence.
Verbeek
M J
MJ
Department of Human and Animal Physiology, Wageningen Agricultural University, The Netherlands; Department of Surgery, Utrecht University Hospital, P.O. Box 85500, 3508 GA Utrecht, The Netherlands.
van der Heijden
A
A
Schreurs
V V
VV
Akkermans
L M
LM
Vos
A
A