Giovannucci, Edward Commentary: vitamin D and colorectal cancer--twenty-five years later. [electronic resource] - International journal of epidemiology Apr 2006 - 222-4 p. digital Publication Type: Comment; Journal Article; Review ISSN: 0300-5771 Standard No.: 10.1093/ije/dyi231 doi Subjects--Topical Terms: Calcifediol--bloodColorectal Neoplasms--bloodHumansSunlightVitamin D--administration & dosage