Transanal Endoscopic Microsurgery (TEM) for minimally invasive resection of rectal adenomas and „low-risk” carcinomas (uT1, G1 - 2) - Langer, C; Liersch, T; Markus, P; Süss, M; Ghadimi, M; Füzesi, L; Becker, H (Zeitschrift für Gastroenterologie, 2002)