J G Ray1, M J Vermeulen. Show Affiliations » 1. Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario.
Abstract
Mesh: See more » Information Storage and RetrievalLanguageMEDLINEUnited States
Year: 1996 PMID: 8991022 PMCID: PMC2359142 DOI: 10.1136/bmj.313.7072.1658
Source DB: PubMed Journal: BMJ ISSN: 0959-8138