Setyawati, K., Abdullah, M., Syam, A. F., Fauzi, A., Makmun, D., Simadibrata, M., Manan, C. and Rani, A. A. (2008) “The Role of Esophageal pH-metri Test on Gastro-Esophageal Reflux Disease Diagnosis”, The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy, 9(3), pp. 91–97. doi: 10.24871/93200891-97.