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Norio Shimizu, Hiroshi Yoshioka, Akio Izumi, Ryuichi Hamazoe, Yukio Osaki, Michio Maeta, Shigemasa Koga. "Prevention of Postoperative Depression of Cellular Immunity by Preoperative Immunopotentiator Treatment in Gastric Cancer Patients." Japanese Journal of Clinical Immunology 3.3 (1980) 140-145