Serum 25-hydroxyvitamin D concentrations in relation to cardiometabolic risk factors and metabolic syndrome in postmenopausal women - Chacko, S A; Song, Y; Manson, J E; Horn, L V; Eaton, C; Martin, L W; McTiernan, A; Curb, J D; Wylie-Rosett, J; Phillips, L S; Plodkowski, R A; Liu, S (Am J Clin Nutr, 2011)