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