Prospective study of the association between grapefruit intake and risk of breast cancer in the European Prospective Investigation into Cancer and Nutrition (EPIC). - Spencer, E; Key, T; Appleby, P; Gils, v; Olsen, A; Tjønneland, A; Clavel-Chapelon, F; Boutron-Ruault, M; Touillaud, M; Sánchez, M; Bingham, S; Khaw, K; et al. (Cancer causes and control : CCC, 2009)