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Science 16 March 2001:
Vol. 291. no. 5511, p. 2075
DOI: 10.1126/science.291.5511.2075

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Frailty and Mortality Among Chinese at Advanced Ages.
D. Gu, M. E. Dupre, J. Sautter, H. Zhu, Y. Liu, and Z. Yi (2009)
J Gerontol B Psychol Sci Soc Sci 64B, 279-289
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Science. ISSN 0036-8075 (print), 1095-9203 (online)