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Literature DB >> 5924059

On the validity of mailed questionnaires in diagnosing "angina pectoris" and "bronchitis".

Abstract

Entities: Disease

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

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Authors: R U Foerster; M Blohmke; B Koschorreck; K Allnoch
Journal: Soz Praventivmed Date: 1976 Sep-Oct

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