1. Niwa H. Improvement of fibrogastroscope for biopsy and application of color television and high frequent currents for endoscopic biopsy (in Japanese). Gastroenterol Endosc. 1968;10:315.
2. Tsuneoka K, Uchida T. Fibergastroscopic polypectomy with snare method and its significance developed in our department: polyp resection and recovery instruments (in Japanese with English abstract). Gastroenterol Endosc. 1969;11:174–84.
3. Tada M, Shimada M, Murakami F, et al. Development of the strip-off biopsy [in Japanese with English abstract]. Gastroenterol Endosc. 1984;26:833–9.
4. Hirao M, Masuda K, Asanuma T, et al. Endoscopic resection of early gastric cancer and other tumors with local injection of hypertonic saline-epinephrine. Gastrointest Endosc. 1988;34(3):264–9.
5. Kakushima N, Fujishiro M. Endoscopic submucosal dissection for gastrointestinal neoplasms. World J Gastroenterol. 2008;14(19):2962–7.