著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL "塚原, 康博",An empirical study of adverse selection in medical insurance : evidence from individual data in Japan,,"Institute of Social Sciences, Meiji University",1999,Discussion paper series,,,,https://cir.nii.ac.jp/crid/1130282270742995968