Lubis, M., & Sianturi, Y. A. (2023). Incidence and Characteristic of Gastroesophageal Reflux Disease (GERD): Before and During Covid-19 Pandemic. The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy, 24(2), 116–121. https://doi.org/10.24871/2422023116-121