1. Emory University School of Medicine; Atlanta Georgia
2. Massachusetts General Hospital; Boston
3. University of Tennessee College of Medicine; Chattanooga
4. Wakayama Medical University; Tokyo Japan
5. Kobe Kaisei Hospital; Kobe Japan
6. University of British Columbia; Vancouver British Columbia Canada
7. Mayo Clinic; Rochester Minnesota
8. San Raffaele Scientific Institute; Milan Italy
9. University of Verona; Verona Italy
10. Tokyo Medical University; Tokyo Japan
11. The Ohio State University Medical College and The Ohio State University Wexner Medical Center; Columbus
12. Tokyo Metropolitan Komagome Hospital; Tokyo Japan
13. Shinshu University; Matsumoto Japan
14. Kanazawa University Graduate School of Medical Sciences and Kanazawa University Hospital; Kanazawa Japan
15. University of Ulsan College of Medicine and Asan Medical Center; Ulsan Republic of Korea
16. Kyoto University Graduate School of Medicine; Kyoto Japan
17. Yokohama City University and Yokohama City University Hospital; Yokohama Japan
18. University of Greifswald Medical School; Greifswald Germany
19. Karolinska Institutet; Stockholm Sweden
20. Kanazawa Medical University; Kanazawa Japan
21. University of Toyama; Toyama Japan
22. Kyushu University and Kyushu University Dental Hospital; Fukuoka Japan
23. Nagoya City University Graduate School of Medicine; Nagoya Japan
24. Kansai Medical University; Hirakata Japan
25. Nagaoka Red Cross Hospital; Nagaoka Japan
26. Aix-Marseille Université, Assistance Publique Hôpitaux de Marseille; Marseille France
27. National Hospital Organization Kyoto Medical Center; Kyoto Japan
28. Tohoku University; Tokyo Japan
29. Sapporo Medical University School of Medicine; Sapporo Japan
30. Teikyo University School of Medicine; Tokyo Japan
31. University College London and University College London Hospitals; London UK
32. Chinese Academy of Medical Sciences and Peking Union Medical College Hospital; Beijing China