DungBui Duy, TungNguyen Lam, and TuTran Viet. “Clinical and Subclinical Characteristics of Achalasia Patients at Bach Mai Hospital and 108 Military Central Hospital ”. Tạp chí Y Dược lâm sàng 108 17, no. 2 (April 13, 2022). Accessed July 22, 2024. https://tcydls108.benhvien108.vn/index.php/YDLS/article/view/1144.