Efficacy of endoscopy in the individual screening program for gastric cancer in Fukuoka city: Comparison with X-ray individual and mass screening programs - KOGA, Yasuhiko; NAKAMURA, Yuichi; TAKEDA, Noriyuki; TANAKA, Keiji; TAKAMIYA, Hiroshi; TAKAYAMA, Takehiko; KAMORI, Mitsuo; KITAGAWA, Shinji; MASUDA, Nobuo; KITANO, Kamesaburo; FUJIMI, Tadashi (Journal of Gastroenterological Mass Survey, 2004)