1. Department of Radiation Oncology, Stanford School of Medicine, Stanford University, Stanford, CA
2. Department of Oncology, St Jude Children's Research Hospital, Memphis, TN
3. BC Cancer, Vancouver, Canada
4. King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
5. The University of Texas MD Anderson Cancer Center, Houston, TX
6. Oxford University, Oxford, United Kingdom
7. Peter MacCallum Cancer Centre, Melbourne, Australia
8. Princess Margaret Cancer Centre, Toronto, Canada
9. The University of Chicago, Chicago, IL
10. Duke University, Durham, NC
11. Department of Haematology, Beatson West of Scotland Cancer Centre, Glasgow, United Kingdom
12. Dana-Farber Cancer Institute, Boston, MA
13. University of Rochester, Rochester, NY
14. University of Pennsylvania, Philadelphia, PA
15. Yale University, New Haven, CT
16. The Royal Hospital, Muscat, Oman
17. Tom Baker Cancer Centre, Calgary, Canada
18. Department of Oncology, University of Turin, Turin, Italy
19. Roswell Park Comprehensive Cancer Center, Buffalo, NY
20. Copenhagen University Hospital, Copenhagen, Denmark
21. Norfolk and Norwich University Hospital, Norfolk, United Kingdom
22. Newcastle upon Tyne Hospitals, Newcastle upon Tyne, United Kingdom
23. Division of Hematology/Oncology, Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN
24. Phoenix Children's Hospital, Phoenix, AZ
25. Vanderbilt University Medical Center, Nashville, TN
26. University Hospitals of Leicester NHS Trust, Leicester, United Kingdom
27. Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom
28. Manchester University NHS Foundation Trust, Manchester, United Kingdom
29. Oncology and Immunology, Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Moscow, Russian Federation
30. Royal Manchester Children's Hospital, Manchester, United Kingdom
31. University of Florida, Gainesville, FL
32. Mayo Clinic, Jacksonville, FL
33. Johns Hopkins University, Baltimore, MD
34. Canberra Health Services, Canberra, Australia
35. College of Health and Medicine, Australian National University, Canberra, Australia
36. Department of Clinical Medicine and Surgery, AOU Federico II, Naples, Italy
37. Institute Curie, Paris, France
38. Birmingham Children's Hospital, Birmingham, United Kingdom
39. Olivia Newton-John Cancer Research Centre at Austin Health, Melbourne, Australia
40. Lymphoma and Related Diseases Registry, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
41. Austin Hospital, Eastern Health, Melbourne, Australia
42. Department of Haematology, Concord Hospital, Concord Clinical School, University of Sydney, Sydney, Australia
43. Department of Haematology, Fiona Stanley Hospital, Perth, Australia
44. Department of Haematology, Sir Charles Gairdner Hospital, Perth, Australia
45. Medical School, University of Western Australia, Perth, Australia
46. Department of Haematology, St Vincent's Hospital, Melbourne, Australia
47. University of Melbourne, Melbourne, Australia
48. Department of Haematology, St Vincent's Hospital Sydney, Sydney, Australia
49. Faculty of Medicine and Health, School of Clinical Medicine, UNSW Sydney, Sydney, Australia
50. School of Medicine, University of Notre Dame, Sydney, Australia
51. University of Queensland Rural Clinical School, Toowoomba, Australia
52. Monash University, Melbourne, Australia
53. Eastern Health, Melbourne, Australia
54. Department of Haematology, Liverpool Hospital, Liverpool, Australia
55. South West Sydney Clinical School, UNSW Medicine, Liverpool, Australia
56. Department of Quantitative Health Sciences, Mayo Clinic, Rochester, MN
57. Center for Integrated Oncology Aachen Bonn Cologne Dusseldorf, University Hospital Cologne, German Hodgkin Study Group, Cologne, Germany