Stanford University Medical center, Stanford, California, United States
Oncology Hematology Care Clinical Trials, Cincinnati, Ohio, United States
Mayo Clinic, Scottsdale, Arizona, United States
Chelsea Village Medical, New York, New York, United States
Anthony Mills, MD, Inc., Los Angeles, California, United States
Homerton University Hospital, London, United Kingdom
Loess Hills Clinical Research Center, Council Bluffs, Iowa, United States
Stanford University Medical Center, Stanford, California, United States
Medical University of South Carolina, Charleston, South Carolina, United States
Baylor University Medical Center, Dallas, Texas, United States
Cleveland Clinic, Cleveland, Ohio, United States
Digestive Health Specialists of the Southeast, Dothan, Alabama, United States
Cedars Sinai Medical Center, Los Angeles, California, United States
Asheville Gastroenterology Associates, Asheville, North Carolina, United States
St. Louis University Gastroenterology and Hepatology Clinical Research, St. Louis, Missouri, United States
South Texas Accelerated Research Therapeutics, San Antonio, Texas, United States
Karmanos Cancer Institute, Detroit, Michigan, United States
Klinikum der LMU Grosshadern, Muenchen, Germany
Medizinische Hochschule Hannover, Hannover, Germany
Universitaetsklinik Heidelberg, Heidelberg, Germany