Syam, A. F., M. S. Kolopaking, and C. Manan. “Polypectomy of Esophageal Polyp Due to Esophagitis”. The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy, vol. 3, no. 2, Jan. 2002, pp. 63-65, doi:10.24871/32200263-65.