S., L. R.; AVALA, R.; VARMA, R.; NARAHARI, N.; K., B.; G. K., P. Prevalence of vitamin D deficiency in chronic obstructive pulmonary disease and it’s correlation with forced expiratory volume in one second: a tertiary care centre study. International Journal of Research in Medical Sciences, [S. l.], v. 6, n. 7, p. 2396–2400, 2018. DOI: 10.18203/2320-6012.ijrms20182824. Disponível em: https://www.msjonline.org/index.php/ijrms/article/view/4993. Acesso em: 12 oct. 2025.