PANT, P. Serum Vitamin D Level in Chronic Obstructive Pulmonary Disease and its Relation with Severity: A Single Centre Study. Journal of Institute of Medicine Nepal, [S. l.], v. 41, n. 2, p. 56–58, 2019. Disponível em: https://www.jiomnepal.com.np/index.php/jiomnepal/article/view/141. Acesso em: 24 apr. 2024.