Dr. Ahmed Mohammed Ahmed, Abdullah Abdulkhaliq Qazzaz, Dr. Hydair Sachet Khalaf. ENDOSCOPIC EXAMINATION OF UPPER GASTROINTESTINAL TRACT. Wor.Bul.Pub.Helt. [Internet]. 2022Aug.24 [cited 2024Nov.14];13:146-5. Available from: https://scholarexpress.net/index.php/wbph/article/view/1286