Darnindro, Nikko, Annela Manurung, Edi Mulyana, and Arnold Harahap. “Prevalence of Gastroesophageal Reflux Disease (GERD) in Dyspepsia Patients in Primary Referral Hospital”. The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy 19, no. 2 (July 21, 2020): 91–96. Accessed October 26, 2026. https://www.ina-jghe.com/index.php/jghe/article/view/666.