1.
Sinha T, Nalli SK, Toppo A. A study of clinical profile of patients with chronic obstructive pulmonary disease. Int J Community Med Public Health [Internet]. 2017 Mar. 28 [cited 2026 Mar. 30];4(4):1000-4. Available from: https://www.ijcmph.com/index.php/ijcmph/article/view/1243