title: Early, but not late chronotypes, are up during their biological night when working the night shift.
authors.affiliation: Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA Harvard Medical School, Harvard University, Boston, Massachusetts, USA.
authors.forename: Céline
authors.initials: C
authors.lastname: Vetter
authors.affiliation: Channing Division of Network Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA Harvard Medical School, Harvard University, Boston, Massachusetts, USA.
authors.forename: Eva S
authors.initials: ES
authors.lastname: Schernhammer
mesh_terms: D002940:Circadian Rhythm; D005260:Female; D006801:Humans; D008297:Male; D008550:Melatonin / Q000031:analogs & derivatives*; D009369:Neoplasms / Q000652:urine*; D009784:Occupational Diseases / Q000652:urine*; D012890:Sleep; D014851:Wakefulness; D014940:Work Schedule Tolerance / Q000502:physiology*
chemical_list: D008550:Melatonin
keywords: Chronotype; Melatonin