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- M Eloi, D V Horvath, V L Szejnfeld, J C Ortega, D A C Rocha, J Szejnfeld, and C H M Castro.
- Rheumatology Division, Universidade Federal de São Paulo/Escola Paulista de Medicina (Unifesp/EPM), São Paulo, Brazil.
- Osteoporos Int. 2016 Dec 1; 27 (12): 3449-3456.
AbstractBrazil is a tropical/subtropical geographic area with elevated ultraviolet (UV) radiation. We report very high prevalence of vitamin D deficiency in a large database of Brazilian subjects and show seasonal and reciprocal relationship between vitamin D and parathyroid hormone (PTH) over the years in this tropical area.
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