“Analytical Study of Endoscopic Ultrasound Findings in Patients With Chronic Upper Abdominal Pain of Unknown Etiology”. Latakia University Journal -Medical Sciences Series 45, no. 4 (September 17, 2023): 249–260. Accessed October 25, 2026. https://journal.latakia-univ.edu.sy/index.php/hlthscnc/article/view/15381.