1. International Bone Marrow Transplant Registry, Health Policy Institute, Medical College of Wisconsin, Milwaukee, Wisconsin, U.S.A.,
2. Department of Bone Marrow Transplantation, Udine University and General Hospital, Udine, Italy,
3. Division of Bone Marrow and Stem Cell Transplantation, Salick Health Care Inc., Los Angeles, California, U.S.A.,
4. University of Minnesota, Minneapolis, Minnesota, U.S.A.,
5. St Vincent's Hospital, Darlinghurst, Australia,
6. M. D. Anderson Cancer Center, Houston, Texas, U.S.A.,
7. Arlington Cancer Center, Arlington, Texas, U.S.A.,
8. Service d'Hématologie, Hôpital Saint‐Louis, Paris, France,
9. Hammersmith Hospital and Royal Postgraduate Medical School, London, U.K.,
10. Brown Cancer Center, University of Louisville, Louisville, Kentucky, U.S.A.,
11. The Centre for Adult Diseases, Osaka, Japan,
12. Department of Pediatrics, Memorial Sloan‐Kettering Cancer Center, New York, New York, U.S.A.,
13. Escuela de Hematologia, Universidad de Barcelona, Barcelona, Spain,
14. Medizisches Universitätsklinik, Kantonsspital Basel, Basel, Switzerland,
15. Department of Oncology, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia