Ethics approval for a national postal survey: recent experience.
Middle
C
C
National Perinatal Epidemiology Unit, Radcliffe Infirmary, Oxford.
Johnson
A
A
Petty
T
T
Sims
L
L
Macfarlane
A
A
D002985:Clinical Protocols; D026724:Ethical Review; D017041:Ethics Committees; D028744:Ethics Committees, Research; D006306:Health Surveys; D006801:Humans; D011177:Postal Service; D012109:Research Support as Topic / Q000706:statistics & numerical data; D006113:United Kingdom