1. Cleveland Clinic; Cleveland Ohio USA
2. University Ziekenhuizen Leuven; Leuven Belgium
3. University of Michigan; Ann Arbor Michigan USA
4. West China Hospital of Sichuan University; Chengdu Sichuan China
5. University of Texas MD Anderson Hospital; Houston Texas USA
6. University of Queensland, Princess Alexandra Hospital; Brisbane Australia
7. Memorial Sloan-Kettering Cancer Center; New York New York USA
8. Erasmus Medical Center; Rotterdam The Netherlands
9. Beijing Cancer Hospital; Beijing China
10. Guy's & St. Thomas’ Hospitals; London UK
11. Hôpital Nord; Marseille France
12. Indiana University Medical Center; Indianapolis Indiana USA
13. University of Pittsburgh Medical Center; Pittsburgh Pennsylvania USA
14. Department of Surgery; The University of Chicago; Chicago Illinois USA
15. Helsinki University Hospital; Helsinki Finland
16. University Medical Center Utrecht; Utrecht The Netherlands
17. Shanghai Chest Hospital; Shanghai China
18. Hospital de Clinicas, University of Buenos Aires; Buenos Aires Argentina
19. Royal Marsden NHS Foundation Trust; London UK
20. University of São Paulo; São Paulo Brazil
21. University of Alabama at Birmingham; Birmingham Alabama USA
22. Hospital Universitario del Mar; Barcelona Spain
23. University of Newcastle upon Tyne, Newcastle; UK
24. Groote Schuur Hospital, University of Cape Town; Cape Town South Africa
25. Fourth Hospital of Hebei Medical University; Shijiazhuang Hebei China
26. Mayo Clinic; Rochester Minnesota USA
27. University of Hong Kong Medical Center, Queen Mary Hospital; Hong Kong, China
28. University of Rochester; Rochester New York USA
29. Toronto General Hospital; Toronto Ontario Canada
30. Fox Chase Cancer Center; Philadelphia Pennsylvania USA
31. University of Montreal; Montreal Quebec Canada
32. Medical University of South Carolina; Charleston South Carolina USA
33. Oregon Health & Science University; Portland Oregon USA
34. University of Miami; Miami Florida USA
35. Case Western Reserve University; Cleveland Ohio USA