“Pediatrics Upper Gastrointestinal Endoscopy Profile in Riau in 2020 and 2021”.
Archives of Pediatric Gastroenterology, Hepatology, and Nutrition 4, no. 1 (February 28, 2025): 1–7. Accessed April 10, 2025.
https://apghn.com/index.php/journal/article/view/81.