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Abstract
Mesh: See more » Age FactorsElectrocardiographyEndoscopy/adverse effectsHeart Diseases/etiologyHumansMiddle AgedRadiography/adverse effects
Year: 1969 PMID: 5792906 PMCID: PMC1983962 DOI: 10.1136/bmj.3.5663.126
Source DB: PubMed Journal: Br Med J ISSN: 0007-1447