Chromoendoscopy Using Indigo Carmine Dye Spraying with Magnifying Observation Is the Most Reliable Method for Differential Diagnosis between Non-Neoplastic and Neoplastic Colorectal Lesions: A Prospective Study - Fu, K -I; Sano, Y; Kato, S; Fujii, T; Nagashima, F; Yoshino, T; Okuno, T; Yoshida, S; Fujimori, T (Endoscopy, 2004)