Habibah, U. and Fauzi, A. 2015. Diagnostic Approach to Gastroesophageal Reflux Disease: The Role of GERD Questionnaire and PPI Test. The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy. 16, 2 (Aug. 2015), 112–119. DOI:https://doi.org/10.24871/1622015112-119.