[1] Kyoto Univ, Grad Sch Med, Kyoto, Japan
[2] Toyama Univ, Hlth Adm Ctr, Toyama, Japan
[3] Shinshu Univ, Sch Med, Matsumoto, Nagano, Japan
[4] Osaka Prefectural Med Ctr Resp & Allerg Dis, Habikino, Japan
[5] Kanazawa Univ, Grad Sch Med Sci, Kanazawa, Ishikawa, Japan
[6] Nagano Prefectural Hosp Org, Nagano, Japan
[7] Saiseikai Noe Hosp, Osaka, Japan