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Problems of sampling and interviewing in studies of old people.

Abstract

Entities: Species

Keywords: GERIATRICS

Source DB: PubMed Journal: J Gerontol ISSN： 0022-1422

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1 in total

Authors: R L Berg; F E Browning; J G Hill; W Wenkert
Journal: Health Serv Res Date: 1970 Impact factor: 3.402

1 in total