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Swartz FC, Watson W, Clow HE, Hamill CM, Henderson E, Priddle WW, Smith E, Taves M.Swartz FC, et al.J Am Geriatr Soc. 1968 Feb;16(2):166-87. doi: 10.1111/j.1532-5415.1968.tb00731.x.J Am Geriatr Soc. 1968.PMID: 4866014No abstract available.