Diarrhea

• Kluang Hospital — Kluang, Johor, Malaysia
• Kajang Hospital — Jalan Semenyih, Kajang, Malaysia
• Kulim Hospital — Jalan Mahang, Kedah, Malaysia
• Temerloh Hospital — Hospital Sultan Haji Ahmad Shah, Pahang, Malaysia

• Sherwood, Arkansas, United States
• Anaheim, California, United States
• Sacramento, California, United States
• San Diego, California, United States

• Mayo Clinic Arizona — Phoenix, Arizona, United States
• Denver Health and University of Colorado — Denver, Colorado, United States
• Borland-Groover Clinic — Jacksonville, Florida, United States
• Edward Hines Jr VA Hospital (veterans only) — Chicago, Illinois, United States

• Lääkärikeskus Aava, matkailuklinikka — Helsinki, Finland

• Dongguan Kanghua Hospital — Dongguan, Guangdong, China

• Saint Petersburg State Budgetary Healthcare Institution "Municipal Outpatient Children Unit #45" — Saint Petersburg, Russia

• Furiex Research Site — Anniston, Alabama, United States
• Furiex Research Site — Birmingham, Alabama, United States
• Furiex Research Site — Birmingham, Alabama, United States
• Furiex Research Site — Dothan, Alabama, United States

Not specified

• Mayo Clinic Scottsdale — Scottsdale, Arizona, United States
• Inland Empire Digestive & Liver Diseases — Redlands, California, United States
• Gastroenterology of the Rockies — Longmont, Colorado, United States
• Connecticut Gastroenterology Institute — Bristol, Connecticut, United States

• Duke University Medical Center — Durham, North Carolina, United States