Urinary melatonin levels, sleep disruption, and risk of prostate cancer in elderly men..

Sigurdardottir LG, Markt SC, Rider JR, Haneuse S, Fall K, Schernhammer ES, Tamimi RM, Flynn-Evans E, Batista JL, Launer L, Harris T, Aspelund T, Stampfer MJ, Gudnason V, Czeisler CA, Lockley SW, Valdimarsdottir UA, Mucci LA. Eur Urol. 2015;67(2):191-4 PMID:25107635