Quality Assurance, Quality Control and Accreditation

Prof. Dr. C.P. Engelfriet, Dr. G.G. de Lange, Central Laboratory of the Blood Transfusion, Service (Sanquin), Plesmanlaan 125, NL-1066 CX Amsterdam (The Netherlands)

Ass. Prof. Dr. H.W. Reesink, Blood Bank North Holland (Sanquin), Plesmanlaan 125, NL-1066 CX Amsterdam (The Netherlands)