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Archives of Gerontology and Geriatrics > 2016 > 65 > C > 239-247
European Journal of Epidemiology > 2016 > 31 > 1 > 73-83
Journal of the American Geriatrics Society > 63 > 6 > 1129 - 1136
Osteoporosis International > 2004 > 15 > 9 > 742-750