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Casazza K, Thomas O, Dulin-Keita A, Fernandez JR.Casazza K, et al.J Bone Miner Metab. 2010 Jul;28(4):424-32. doi: 10.1007/s00774-009-0143-x. Epub 2010 Jan 20.J Bone Miner Metab. 2010.PMID: 20087611Free PMC article.