Registration of observational studies: is it time?
Williams
Rebecca J
RJ
National Library of Medicine, National Institutes of Health, UnitedStates Department of Health and Human Services, Bethesda, USA. williamsre@mail.nih.gov
Tse
Tony
T
Harlan
William R
WR
Zarin
Deborah A
DA
D015982:Bias; D035843:Biomedical Research / Q000458:organization & administration* / Q000592:standards; D006801:Humans; D009317:National Library of Medicine (U.S.); D012042:Registries; D014481:United States