[Does vitamin D prevent colorectal cancers?].
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D002112:Calcifediol / Q000097:blood; D016022:Case-Control Studies; D015179:Colorectal Neoplasms / Q000097:blood / Q000517:prevention & control*; D006801:Humans; D014807:Vitamin D / Q000008:administration & dosage*
D014807:Vitamin D; D002112:Calcifediol