ALSHISHTAWY, M. M. To Be or Not To Be Exposed to Direct Sunlight : Vitamin D Deficiency in Oman. Sultan Qaboos University Medical Journal, [S. l.], v. 11, n. 2, p. 196–200, 2011. Disponível em: https://journals.squ.edu.om/index.php/squmj/article/view/1571. Acesso em: 20 jul. 2024.