Liang X, Margolis KL, Hendryx M, Reeves K, Wassertheil-Smoller S, Weitlauf J, Danhauer SC, Chlebowski RT, Caan B, Qi L, Lane D, Lavasani S, Luo J. Effect of depression before breast cancer diagnosis on mortality among postmenopausal women. Cancer. 2017 Aug 15; 123(16):3107-3115.