Dr Cheng's letter was referred to the authors, and their reply follows

Publisher: John Wiley & Sons Inc

E-ISSN: 1532-5415|37|1|90-91

ISSN: 0002-8614

Source: JOURNAL OF AMERICAN GERIATRICS SOCIETY, Vol.37, Iss.1, 1989-01, pp. : 90-91

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Abstract