Bach, Tran, 		Trung, Tran, 		Son Nhat, Bui, AND 		Luyen, Le.
" A Survey of Antibiotic Usage Characteristics in Treatment of Acute Exacerbation of COPD Patients in National Hospital 74" <em>VNU Journal of Science: Medical and Pharmaceutical Sciences</em> [Online], Volume 38 Number 2 (24 June 2022)