Night shifts and colorectal cancer risk.
D015179:Colorectal Neoplasms / Q000209:etiology*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008029:Lighting / Q000009:adverse effects; D008550:Melatonin / Q000378:metabolism*; D009729:Nursing; D013997:Time Factors; D014940:Work Schedule Tolerance
D008550:Melatonin