Leading Centers according to Enrollment numbers are:

• UTHealth - Memorial Hermann Hospital
• University of Washington - Harborview Medical Center
• University of Maryland - R Adams Cowley Shock Trauma Center
• Loma Linda Medical Center
• ASST Grande Ospedale Metropolitano NIGUARDA, Italy

• Baylor College of Medicine - Ben Taub Medical Center
• University of Colorado - UCHealth
• Baylor Scott & White Health
• UT Health Science Center (Memphis)
• UT Health San Antonio

• Denver Health and Hospital Authority
• Cooper University Hospital
• Medical Center of the Rockies
• Dell Seton Medical Center at The University of Texas
• Mayo Rochester

• Broward Health
• UMASS Memorial Health Care
• Hospital Universitario Valle de Hebrón
• LAC+USC Medical Center
• Via Christi Regional Medical Center

• University of Alabama at Birmingham
• Sant'Orsola Hospital, Italy
• Örebro University Hospital, Sweden
• St. Louis University
• Medical College of Wisconsin

• Emory University at Grady Memorial Hospital
• Hospital Clinic de Barcelona, Spain
• London Health Sciences Centre, Canada
• UC Davis
• Miami Valley Hospital

• UC San Diego Medical Center
• Kirov Military Medical Academy, Russia
• SUNY Upstate Medical University
• St. Michael's Hospital, Canada
• LSUHSC/University Medical Center in New Orleans

• University Hospital of Trieste, Italy
• University of Chicago
• University of Missouri
• Memorial Regional Hospital
• Albany Medical College

• Fondazione IRCCS Policlinico Milan, Italy
• Massachusetts General Hospital
• Cedars Sinai Medical Center
• Beth Israel Deaconess Medical Center
• Maimonides Medical Center