[Obtaining medical ethical approval for a multicentre, randomised study: prospective evaluation of a ponderous process].
F H
FH
Bosch
N S
NS
Klazinga
B E
BE
Schaffmeister
D026724:Ethical Review; D017041:Ethics Committees / Q000458:organization & administration* / Q000592:standards; D032984:Ethics, Research; D006801:Humans; D013997:Time Factors