Giovannucci, Edward2019-09-232007Giovannucci, Edward. 2008. “Strengths and Limitations of Current Epidemiologic Studies: Vitamin D as a Modifier of Colon and Prostate Cancer Risk.” Nutrition Reviews 65 (June): S77–79. https://doi.org/10.1111/j.1753-4887.2007.tb00345.x.0029-66431753-4887http://nrs.harvard.edu/urn-3:HUL.InstRepos:41392000en-USStrengths and Limitations of Current Epidemiologic Studies: Vitamin D as a Modifier of Colon and Prostate Cancer RiskJournal Article2019-09-2310.1111/j.1753-4887.2007.tb00345.x