[1] Univ Yamanashi, Interdiciplinary Grad Sch Med & Engn, Fac Med, Yamanashi 4093898, Japan
[2] Univ Yamanashi, Dept Alternat Med, Fac Med, Yamanashi 4093898, Japan
[3] Japan Appl Microbiol Res Inst Ltd, Yamanashi, Japan
[4] Kanazawa Med Univ, Dept Serol, Uchinada, Ishikawa 92002, Japan