Vitamin d deficiency and seasonal variation in an adult South Florida population.
Levis S, Gomez A, Jimenez C, Veras L, Ma F, Lai S, Hollis B, Roos BA.
J Clin Endocrinol Metab. 2005 Mar;90(3):1557-62. Epub 2005 Jan 5.
PMID: 15634725
The prevalence of hypovitaminosis D is considerable even in southern latitudes and should be taken into account in the evaluation of postmenopausal and male osteoporosis.