title: Sleep duration, melatonin and breast cancer in the Singapore Chinese Health Study: on null results and their interpretation.
authors.forename: Thomas C
authors.initials: TC
authors.lastname: Erren
authors.forename: Russel J
authors.initials: RJ
authors.lastname: Reiter
mesh_terms: D001943:Breast Neoplasms / Q000652:urine*; D005260:Female; D006801:Humans; D008550:Melatonin / Q000031:analogs & derivatives* / Q000652:urine*; D012890:Sleep
chemical_list: D008550:Melatonin