title: Author's reply to: Sleep duration, melatonin and breast cancer in the Singapore Chinese Health Study: on null results and their interpretation.
authors.forename: Anna H
authors.initials: AH
authors.lastname: Wu
authors.forename: Mimi C
authors.initials: MC
authors.lastname: Yu
mesh_terms: D001943:Breast Neoplasms / Q000652:urine*; D005260:Female; D006801:Humans; D008550:Melatonin / Q000031:analogs & derivatives* / Q000652:urine*; D012890:Sleep
chemical_list: D008550:Melatonin