International clinical trial registration: any progress?
A Metin
AM
Gülmezoglu
Ida
I
Sim
D035843:Biomedical Research / Q000592:standards*; D002986:Clinical Trials as Topic / Q000592:standards*; D016208:Databases, Factual; D038622:Internationality; D017410:Practice Guidelines as Topic; D012042:Registries / Q000592:standards*; D014944:World Health Organization / Q000458:organization & administration*