1. Department of Bacteriology II, National Institute of Infectious Diseases, Tokyo, Japan
2. Ishikawa Prefectural Central Hospital, Ishikawa Japan
3. Okayama Saiseikai General Hospital, Okayama, Japan
4. Tsuyama Chuo Hospital, Okayama, Japan
5. Japanese Red Cross Gifu Hospital, Gifu, Japan
6. NHO Sendai Medical Center, Miyagi, Japan
7. NHO Matsumoto Medical Center, Nagano, Japan
8. Aichi Cancer Center Hospital, Aichi, Japan
9. NHO Kure Medical Center, Hiroshima, Japan
10. Chiba Cancer Center, Chiba, Japan
11. Toyokawa City Hospital, Aichi, Japan
12. Hiroshima University Hospital, Hiroshima, Japan
13. Saitama City Hospital, Saitama, Japan
14. NHO Tokyo Medical Center, Tokyo, Japan
15. Tsuruoka Municipal Shonai Hospital, Yamagata, Japan
16. Osaka University Hospital, Osaka, Japan
17. Liverpool Clinical Laboratories, Royal Liverpool and Broadgreen University Hospitals NHS Trust, Liverpool, UK
18. Department of Molecular and Clinical Pharmacology, University of Liverpool, Liverpool, UK