Signs and Symptoms, Digestive

• North Alabama Research Center LLC — Athens, Alabama, United States
• Cullman Research Center — Cullman, Alabama, United States
• Medical Affiliated Research Center Inc — Huntsville, Alabama, United States
• East View Medical Research, LLC — Mobile, Alabama, United States

• Keck Hospital of University of Southern California — Los Angeles, California, United States
• Rocky Mountain Movement Disorders Center, PC — Englewood, Colorado, United States
• Georgetown Universtiy, Department of Neurology — Washington D.C., District of Columbia, United States
• Parkinson's Disease and Movement Disorders Center of Boca Raton — Boca Raton, Florida, United States

• Baxter Investigational Site — Mobile, Alabama, United States
• Baxter Investigational Site — New Haven, Connecticut, United States
• Baxter Investigational Site — Orlando, Florida, United States
• Baxter Investigational Site — Boston, Massachusetts, United States

• Faculty of Medicine-Ain Shams University — Cairo, Abbasia, Egypt

• University of Health Sciences — Ankara, Turkey (Türkiye)

• Medical University of Silesia — Sosnowiec, Silesian Voivodeship, Poland

• Beverly Hills Cancer Center — Beverly Hills, California, United States
• SCL Health Cancer Centers of Colorado - St. Mary's Hospital and Regional Medical Center — Grand Junction, Colorado, United States
• Lutheran Medical Center — Wheat Ridge, Colorado, United States
• Tallahassee Memorial Healthcare Cancer Center — Tallahassee, Florida, United States

Not specified

• Massachusetts General Hospital — Boston, Massachusetts, United States

• Texas A&M University — College Station, Texas, United States