Chevy Chase Clinical Research, Chevy Chase, Maryland, United States
Texas Digestive Disease Consultants - Dallas, Dallas, Texas, United States
Rush University Medical Center, Chicago, Illinois, United States
Beijing Chao Yang Hospital, Beijing, Beijing, China
Fujian Medical University Union Hospital, Fuzhou, Fujian, China
Beijing Anzhen Hospital, Beijing, Beijing, China
Benchmark Research Austin, Austin, Texas, United States
Royal Adelaide Hospital, Adelaide, South Australia, Australia
Saskatchewan Cancer Agency, Regina, Saskatchewan, Canada
Imperial College Healthcare NHS Trust, London, England, United Kingdom