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Vitamin D deficiency in girls from South Brazil: a cross-sectional study on prevalence and association with vitamin D receptor gene variants

Betânia R Santos, Luis P G Mascarenhas, Fabíola Satler, Margaret C S Boguszewski and Poli Mara Spritzer*

BMC Pediatrics 2012, 12:62  doi:10.1186/1471-2431-12-62