Sayami, M., S. Baral, R. Shrestha, and D. Karki. “Prevalence of Chronic Cor Pulmonale in Chronic Obstructive Pulmonary Disease Patients in a Teaching Hospital in Nepal”. Journal of Institute of Medicine Nepal (JIOM Nepal), Vol. 41, no. 1, Sept. 2019, pp. 15-19, http://nepmed.nhrc.gov.np/index.php/jiomn/article/view/552.