Ayman Fathy El-Sayed. “Eosinophilic Esophagitis in Upper Endoscopy Patients With Gastrointestinal Complaints”. The International Journal of Multiphysics, vol. 18, no. 3, Sept. 2024, pp. 5481 -92, https://www.themultiphysicsjournal.com/index.php/ijm/article/view/2226.