Effects of the phytoestrogen genistein on bone metabolism in osteopenic postmenopausal women: a randomized trial. - Marini H; Minutoli L; Polito F; Bitto A; Altavilla D; Atteritano M; Gaudio A; Mazzaferro S; Frisina A; Frisina N; Lubrano C; Bonaiuto M; et al. (Annals of Internal Medicine, 2007)