Colitis, Ulcerative

• Internal Clinic, Vitkovice Hospital Ostrava — Ostrava, Vitkovice, Czechia
• Teaching Hospital Olomouc, Dep. Internal Clinic — Olomouc, Czechia
• Center of Gastroenterology at General Teaching Hospital — Prague, Czechia
• Institute of Clinical and Preventive Medicine (IKEM), Clinic of Hepatogastroenterology — Prague, Czechia

• Inflammatory Bowel Disease Center — Los Angeles, California, United States
• University of California, San Francisco — San Francisco, California, United States
• Atlanta Gastroenterology Associates — Atlanta, Georgia, United States
• Northwestern University — Chicago, Illinois, United States

• Cedars-Sinai Medical Center — Los Angeles, California, United States
• University of California — San Francisco, California, United States
• Atlanta Gastroenterology Associates — Atlanta, Georgia, United States
• The University of Chicago Medical Center — Chicago, Illinois, United States

• Rush University Medical Center — Chicago, Illinois, United States

• Greater Baltimore Medical Cente — Baltimore, Maryland, United States

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

Not specified

• Research Site — Birmingham, Alabama, United States
• Research Site — Anaheim, California, United States
• Research Site — Sacramento, California, United States
• Research Site — San Francisco, California, United States

Not specified

• Hopital Erasme — Brussels, Belgium
• Ulb - Clinique Saint Luc — Brussels, Belgium
• Gent University Hospital — Ghent, Belgium
• Leuven University Hospital — Leuven, Belgium