White blood cell counts, insulin-like growth factor-1 levels, and frailty in community-dwelling older women. - Leng SX; Hung W; Cappola AR; Yu Q; Xue QL; Fried LP; Leng, Sean X; Hung, Will; Cappola, Anne R; Yu, Qilu; Xue, Qian-Li; Fried, Linda P (Journals of Gerontology Series A: Biological Sciences & Medical Sciences, 2009)