Urinary melatonin concentration and the risk of breast cancer in Nurses' Health Study II.
Brown SB, Hankinson SE, Eliassen AH, Reeves KW, Qian J, Arcaro KF, Wegrzyn LR, Willett WC, Schernhammer ES. Urinary melatonin concentration and the risk of breast cancer in Nurses' Health Study II. Am J Epidemiol. 2015 Feb 01; 181(3):155-62.