FREQUENCY OF ATRIAL FIBRILLATION IN PATIENTS OF CHRONIC OBSTRUCTIVE PULMONARY DISEASE PRESENTING TO MAYO HOSPITAL, LAHORE. Frontier in Medical and Health Research, [S. l.], v. 3, n. 5, p. 1964–1971, 2025. Disponível em: https://fmhr.net/index.php/fmhr/article/view/1133.. Acesso em: 27 jul. 2026.