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Hossein-nezhad A, Holick MF.Hossein-nezhad A, et al. Among authors: holick mf.Mayo Clin Proc. 2013 Jul;88(7):720-55. doi: 10.1016/j.mayocp.2013.05.011. Epub 2013 Jun 18.Mayo Clin Proc. 2013.PMID: 23790560Free PMC article.