STUDY ON SERUM ELECTROLYTES AND SEVERITY OF COPD AS PER GOLD CRITERIA AT OUR TERTIARY CARE HOSPITAL. International Research Journal of Pharmacy, [S. l.], v. 14, n. 6, p. 5–9, 2023. Disponível em: https://irjponline.org/index.php/irjp/article/view/29. Acesso em: 21 oct. 2025.