Int J Epidemiol. 2006 Apr;35(2):217-20. Epub 2005 Nov 22.
Do sunlight and vitamin D reduce the likelihood of colon cancer?
Garland CF, Garland FC.
Department of Epidemiology, The Johns Hopkins University, School of Hygiene and Public Health, 615 N Wolfe Street, Baltimore, MD 21205, USA.
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PMID: 16303809 [PubMed]