Arinton, I Gede, Pugud Samudro, and Soewignjo Soemohardjo. “The Nepean Dyspepsia Index: Translation and Validation in Indonesian Language”. The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy 7, no. 2 (January 8, 2006): 38–41. Accessed October 21, 2026. https://www.ina-jghe.com/index.php/jghe/article/view/169.