Registration of clinical trials.
Levin
Leonard A
LA
Gottlieb
Justin L
JL
Beck
Roy W
RW
Albert
Daniel M
DM
Liesegang
Thomas J
TJ
Hoyt
Creig S
CS
Dick
Andrew
A
Bhisitkul
Robert
R
Schachat
Andrew P
AP
D002986:Clinical Trials as Topic / Q000379:methods / Q000592:standards*; D003625:Data Collection; D035081:Editorial Policies; D006801:Humans; D009885:Ophthalmology / Q000379:methods / Q000592:standards*; D012042:Registries