Thi Xuan, Bui, Ngo Tien Thanh, & To Khanh Linh.
" Analysis of Direct Treatment Cost for Exacerbation of Chronic Obstructive Pulmonary Disease in E Hospital from October 2019 to March 2020." <em>VNU Journal of Science: Medical and Pharmaceutical Sciences</em> [Online], 36.2 (2020): n. pag. Web. 16 Apr. 2024