%0 Journal Article %T Prevalence and Factors Associated with Vitamin D Deficiency and Hyperparathyroidism in HIV-Infected Patients Treated in Barcelona %A Elisabet Lerma %A M. Ema Molas %A M. Milagro Montero %A Ana Guelar %J ISRN AIDS %D 2012 %I Hindawi Publishing Corporation %R 10.5402/2012/485307 %U http://dx.doi.org/10.5402/2012/485307