S F Olsen. Show Affiliations »
Abstract
Mesh: See more » History, 20th CenturyPatient SelectionRandomized Controlled Trials as Topic/historyRandomized Controlled Trials as Topic/methodsResearch Design
Year: 1999 PMID: 10323832 PMCID: PMC1115728
Source DB: PubMed Journal: BMJ ISSN: 0959-8138