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Abstract
Mesh: See more » AdvertisingPeriodicals as TopicPublishingWriting
Year: 1985 PMID: 4059152 PMCID: PMC2418291 DOI: 10.1136/pgmj.61.720.935
Source DB: PubMed Journal: Postgrad Med J ISSN: 0032-5473 Impact factor: 2.401