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;10:31.
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;11:174-184.
3. Tada M, Shimada M, Murakami F, Shimada M, Mizumachi M, Arima T, Yanai H, Oka S, Shigeeda M, Ogino M. Development of the strip-off biopsy (in Japanese with English abstract). Gastroenterol Endosc 1984;26:833-839.
4. Endoscopic mucosal resection with a cap-fitted panendoscope for esophagus, stomach, and colon mucosal lesions
5. Endoscopic resection of early gastric cancer and other tumors with local injection of hypertonic saline-epinephrine