1. Nagoya University, Nagoya, Aichi Prefecture, Japan
2. Hamamatsu Medical University, Hamamatsu, Shizuoka, Japan
3. Wakayama Rosai Hospital, Wakayama, Japan
4. Tokyo Medical and Dental University, Tokyo, Japan
5. Yamaguchi University, Yamaguchi, Japan
6. Kubokawa Hospital, Shimanto, Kochi, Japan
7. Asa Citizens Hospital, Hiroshima, Japan
8. Kurume University, Kurume, Japan
9. Tokyo Women's Medical University, Tokyo, Japan
10. Kansai Medical University, Moriguchi, Osaka, Japan
11. Hirosaki University, Hirosaki, Aomori, Japan
12. Kugayama Hospital, Tokyo, Japan
13. Yokohama City Minato Red Cross Hospital, Yokohama, Kanagawa, Japan