The proportion of patients with gastroesophageal reflux disease who had reflux esophagitis was 36, 3%, levels of Los Angeles A, B, C, D were 87%, 10, 4%, 1, 3% and 1, 3%.
Tỷ lệ bệnh nhân có VTQTN là 36,3%, mức độ Los Angeles A, B, C, D lần lượt là 87%, 10,4%, 1,3% và 1,3%.