Saragih RH, Rey I. FSSG Scale System in Comparison with GERD Questionnaires in Predicting Endoscopic Findings with Reflux Esophagitis. InaJGHE [Internet]. 2012 Dec. 15 [cited 2026 Oct. 24];13(3):136-40. Available from: https://www.ina-jghe.com/index.php/jghe/article/view/388