A study on the diagnostic accuracy of indirect X-ray in the gastric mass survey (The first report): The cases with check-ups at the different part of the stomach from the cancer location - KANNO, Jin; MIDORIKAWA, Shigeo; HANEDA, Kiyotaka; SUZUKI, Shigeki; KAGEYAMA, Kazuhiro; KIMURA, Kazue; FUJITA, Tetsuo; MURAOKA, Hideo; KATO, Hisashi; SATO, Tomoya; YAGINUMA, Koji; MIZUKOSHI, Hitoshi (Journal of Gastroenterological Mass Survey, 1987)