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Oba K, Morita S, Tsuburaya A, Kodera Y, Kobayashi M, Sakamoto J. Efficacy of Adjuvant Chemotherapy Using Oral Fluorinated Pyrimidines for Curatively Resected Gastric Cancer: A Meta-Analysis of Centrally Randomized Controlled Clinical Trials in Japan. J Chemother 2006; 18: 311-7.
Sakamoto J, Morita S, Oba K, Matsui T, Kobayashi M, Nakazato H, Ohashi Y; Meta-Analysis Group of the Japanese Society for Cancer of the Colon Rectum. Efficacy of adjuvant immunochemotherapy with polysaccharide K for patients with curatively resected colorectal cancer: a meta-analysis of centrally randomized controlled clinical trials. Cancer Immunol Immunother 2006; 55: 404-11.
Sakamoto J, Oba K, Matsui T, Kobayashi M. Efficacy of Oral Anti-Cancer Agents for Colorectal Cancer. Dis Colon Rectum 2006; 49 Suppl 1: S82-91.
Morita S, Kobayashi M, Oba K, Ichihara T, Nakao A, Sakamoto J. Truth-telling to Patients with Advanced Cancer: A Comparison between Cancer center, University Hospitals, General City Hospitals, and Private General Practitioners in Japan. Ann Cancer Res Therap 2006; 14: 1-11.