W A Silverman, I Chalmers. Show Affiliations »
Abstract
Mesh: See more » Clinical Trials as Topic/historyHistory, 20th CenturyStatistics as Topic/historyUnited Kingdom
Year: 1992 PMID: 1316825 DOI: 10.1016/0197-2456(92)90016-s
Source DB: PubMed Journal: Control Clin Trials ISSN: 0197-2456