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Urban factor and prevalence of respiratory symptoms and "angina ectoris". A study on 9,168 twin pairs with the aid of mailed questionnaires.

Abstract

Entities: Disease

Source DB: PubMed Journal: Arch Environ Health ISSN： 0003-9896

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Authors: K J Cullen; T A Welborn; N S Stenhouse; M G McCall; D H Curnow
Journal: Br J Prev Soc Med Date: 1969-05

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