AFZAAL ALI KHAN; RUKHSANA ANWAR; MUHAMMAD JALAL; SAID UL SIYAB; MUHAMMAD SAJJAD. Association Between Vitamin D Levels and Infective Exacerbation of Chronic Obstructive Pulmonary Disease (COPD). Journal of Health, Wellness, and Community Research, [S. l.], p. e359, 2025. DOI: 10.61919/v4tpx773. Disponível em: https://jhwcr.com/index.php/jhwcr/article/view/359. Acesso em: 4 jul. 2025.