PALADUGU, L.; V., A. P.; MUREBOINA, J.; TUMMALA, A. C. Study of serum vitamin D2 and calcium in young and middle aged healthy male smokers in rural tertiary care center. International Journal of Advances in Medicine, [S. l.], v. 7, n. 2, p. 308–313, 2020. DOI: 10.18203/2349-3933.ijam20200086. Disponível em: https://www.ijmedicine.com/index.php/ijam/article/view/2126. Acesso em: 17 nov. 2025.