Facilitating clinical research in the 1990s and beyond: challenges facing clinical trial registers.
Moher
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Clinical Epidemiology Unit, Loeb Medical Research Institute, Ottawa Civic Hospital, Ontario, Canada.
D002986:Clinical Trials as Topic / Q000592:standards / Q000639:trends*; D003201:Computers; D017408:Guidelines as Topic; D006801:Humans; D015201:Meta-Analysis as Topic; D016032:Randomized Controlled Trials as Topic / Q000592:standards / Q000639:trends; D012042:Registries; D012106:Research / Q000639:trends*