Association of ECG Lead I Sign in Patients of Chronic Obstructive Pulmonary Disease. Indus Journal of Bioscience Research, [S. l.], v. 3, n. 4, p. 618–622, 2025. DOI: 10.70749/ijbr.v3i4.973. Disponível em: https://ijbr.com.pk/IJBR/article/view/973. Acesso em: 14 aug. 2025.