Huzaipah, Huzaipah, Elmeida Efffendy, and Nazli Mahdinasari Nasution. 2021. “Factors Associated With Depression Score in People With Chronic Obstructive Pulmonary Disease at the North Sumatera University Hospital”. Open Access Macedonian Journal of Medical Sciences 9 (T3):168-71. https://doi.org/10.3889/oamjms.2021.6298.