M A Ibrahim, W O Spitzer. Show Affiliations »
Abstract
Mesh: See more » Cross-Sectional StudiesEpidemiologic MethodsEpidemiology/standardsPublic PolicyPublishingRandom AllocationResearch DesignRetrospective StudiesStatistics as TopicTerminology as Topic
Year: 1979 PMID: 312803 DOI: 10.1016/0021-9681(79)90026-2
Source DB: PubMed Journal: J Chronic Dis ISSN: 0021-9681