Risk prediction for estrogen receptor-specific breast cancers in two large prospective cohorts - Li, K; Anderson, G; Viallon, V; Arveux, P; Kvaskoff, M; Fournier, A; Krogh, V; Tumino, R; Sánchez, MJ; Ardanaz, E; Chirlaque, MD; Agudo, A; et al. (Breast Cancer Research, 2018)