Endoscopic Therapy Using Monopolar and Bipolar Snare with a High-Frequency Current in Patients with a Pacemaker - Ito, S; Shibata, H; Okahisa, T; Okamura, S; Wada, S; Yano, M; Saijyo, T; Honda, H; Hayashi, H; Shimizu, I; Ii, K (Endoscopy, 1994)