D L Sackett. Show Affiliations »
Abstract
Mesh: See more » Epidemiologic MethodsResearch DesignRetrospective StudiesSampling StudiesStatistics as TopicTerminology as Topic
Year: 1979 PMID: 447779 DOI: 10.1016/0021-9681(79)90012-2
Source DB: PubMed Journal: J Chronic Dis ISSN: 0021-9681