D S Frederickson. Show Affiliations »
Abstract
Mesh: See more » Clinical Trials as Topic/trendsDelivery of Health Care/economicsNational Institutes of Health (U.S.)United States
Year: 1980 PMID: 7261617 DOI: 10.1016/0197-2456(80)90006-9
Source DB: PubMed Journal: Control Clin Trials ISSN: 0197-2456