Manh Duc, Phung, Dinh Thi, Dao, AND Tuan Son, Nguyen. " Clinical Symptoms, Endoscopic Imaging and Stroboscopic Imaging in Patients with Vocal Fold Polyp at National ENT Hospital from August 2020 to May 2021" VNU Journal of Science: Medical and Pharmaceutical Sciences [Online], Volume 37 Number 4 (7 December 2021)