Frandy, Frandy, and Prionggo Mondrowinduro. “First Year Gastrointestinal Endoscopy Profile in Singkawang West Borneo 2017 – 2018”. The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy, vol. 19, no. 2, July 2020, pp. 83-90, doi:10.24871/192201883-90.