FROOTAN, M., CHOOBTASHANI, S., AZARGASHB, E., AMIN, P. M., HAMIDE, M., ZALI, M. R., & HALEH, A. (2011). Non-erosive reflux disease compared with erosive esophagitis with regards to acid reflux and symptom patterns. Turkish Journal of Gastroenterology, 22(5), 464–471. https://doi.org/10.4318/tjg.2011.0249