DHEAS levels and mortality in disabled older women: the Women's Health and Aging Study I. - Cappola AR; Xue QL; Walston JD; Leng SX; Ferrucci L; Guralnik J; Fried LP; Cappola, Anne R; Xue, Qian-Li; Walston, Jeremy D; Leng, Sean X; Ferrucci, Luigi; et al. (Journals of Gerontology Series A: Biological Sciences & Medical Sciences, 2006)