Yusuf, Sulaiman, and Badriul Hegar. “Recurrent Abdominal Pain in Children”. The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy 7, no. 2 (January 8, 2006): 42–45. Accessed October 21, 2026. https://www.ina-jghe.com/index.php/jghe/article/view/173.