Epstein-Barr Virus Infections

• Hospital General de Alicante — Alicante, Spain
• Hospital "Santa Creu i Sant Pau" — Barcelona, Spain
• Hospital Clínico y Provincial de Barcelona — Barcelona, Spain
• Hospital Juan Canalejo — A Coruña, La Coruña, Spain

• Children's Hospital of Orange County — Orange, California, United States
• Alfred I. duPont Hospital for Children — Wilmington, Delaware, United States
• Children's National Medical Center — Washington D.C., District of Columbia, United States
• Loyola University Medical Center, Cardinal Bernardin Cancer Center — Maywood, Illinois, United States

• Children's Oncology Group — Arcadia, California, United States

• Indiana University Cancer Center — Indianapolis, Indiana, United States

• Divisione di Ematologia e TMO, Ospedale San Maurizio — Bolzano, (bz), Italy
• Ematologia e centro TMO - Ospedale Armando Businco — Cagliari, (ca), Italy
• S.C. Ematologia - Azienda Ospedaliera S. Croce e Carle — Cuneo, (cn), Italy
• Onco-Ematologia - Ospedale Civile — Noale, (ve), Italy

• Banner Good Samaritan Medical Center — Phoenix, Arizona, United States
• City of Hope Comprehensive Cancer Center — Duarte, California, United States

• Indiana University Cancer Center — Indianapolis, Indiana, United States

Not specified

• Chedoke-McMaster Hospitals — Hamilton, Ontario, Canada
• Juravinski Cancer Centre at Hamilton Health Sciences — Hamilton, Ontario, Canada
• Princess Margaret Hospital Phase 2 Consortium — Toronto, Ontario, Canada
• University Health Network-Princess Margaret Hospital — Toronto, Ontario, Canada

• Fred Hutchinson Cancer Research Center/University of Washington Cancer Consortium — Seattle, Washington, United States