النابلسي إ. ., حسان زيزفون, and رنا عيسى. “Analytical Study of Upper Gastrointestinal Endoscopy Findings in Patients With Dysphagia”. Tishreen University Journal -Medical Sciences Series, vol. 44, no. 4, Sept. 2022, pp. 285-06, https://journal.tishreen.edu.sy/index.php/hlthscnc/article/view/13109.