1. University of Michigan; Ann Arbor
2. Istanbul University; Istanbul Turkey
3. Oklahoma Medical Research Foundation; Oklahoma City
4. Ege University; Izmir Turkey
5. Marmara University; Istanbul Turkey
6. Koc University; Istanbul Turkey
7. Mount Sinai Hospital; Toronto Ontario Canada
8. University of South Florida; Tampa
9. Cleveland Clinic Foundation; Cleveland Ohio
10. Dokuz Eylul University and Katip Celebi University; Izmir Turkey
11. Dokuz Eylul University; Izmir Turkey
12. St. Joseph's Healthcare and McMaster University; Hamilton Ontario Canada
13. University of Utah; Salt Lake City
14. Hacettepe University; Ankara Turkey
15. University of Pittsburgh, Pittsburgh, Pennsylvania, and Henry Ford Health System; Detroit Michigan
16. University of Pennsylvania; Philadelphia
17. Ankara Numune Training and Research Hospital; Ankara Turkey
18. Ankara Numune Training and Research Hospital and Ankara University; Ankara Turkey
19. Ankara Numune Training and Research Hospital, Ankara, Turkey, and Hitit University; Corum Turkey
20. Ankara University; Ankara Turkey
21. Boston University School of Medicine; Boston Massachusetts
22. Cukurova University; Adana Turkey
23. Gazi University; Ankara Turkey
24. Kocaeli University; Kocaeli Turkey
25. Gaziantep University; Gaziantep Turkey
26. Eskisehir Osmangazi University; Eskisehir Turkey
27. Johns Hopkins University; Baltimore Maryland
28. Mayo Clinic College of Medicine; Rochester Minnesota
29. Pamukkale University; Denizli Turkey
30. King's College London; London UK
31. Trakya University; Edirne Turkey
32. Suleyman Demirel University; Isparta Turkey
33. Uludag University; Bursa Turkey
34. Yeditepe University; Istanbul Turkey
35. Oklahoma Medical Research Foundation and University of Oklahoma Health Sciences Center; Oklahoma City