TY - JOUR AU - Saitoh, Y; Obara, T; Watari, J TI - Invasion depth diagnosis of depressed type early colorectal cancers by combined use of videoendoscopy and chromoendoscopy JO - Gastrointest Endosc VL - 48 PY - 1998 DO - 10.1016/S0016-5107(98)70004-5 L3 - PubMed-ID: 9786107 SP - 362 EP - 370 N1 - et al. ER -