Nhu Dua, Nguyen, 		Thi Hong Hoa, Doan, 		Tuan Son, Nguyen, AND 		Le Hoa, Nguyen.
" The Clinical Characteristics of Acute Otitis Media  at Several Hospitals in Hanoi from 2019 to 2020" <em>VNU Journal of Science: Medical and Pharmaceutical Sciences</em> [Online], Volume 38 Number 4 (19 December 2022)