Gastroenteritis

• Georgetown University Hospital — Washington D.C., District of Columbia, United States
• Carle Foundation Hospital — Urbana, Illinois, United States
• Louisiana Research Center, LLC — Shreveport, Louisiana, United States
• Asheville Gastroenterology Associates, PA — Asheville, North Carolina, United States

Not specified

• Preferred Research Partners — Little Rock, Arkansas, United States
• United Research Institute — Murrieta, California, United States
• Research Associates of South Florida, LLC — Miami, Florida, United States
• IMIC — Palmetto Bay, Florida, United States

• Jordan University Hospital — Amman, Jubaiha, Jordan

• Ayman El Nakeeb — Al Mansurah, Egypt

• Alabama Therapeutics CRS — Birmingham, Alabama, United States
• Ucsf Aids Crs — San Francisco, California, United States
• Washington U CRS — St Louis, Missouri, United States
• NY Univ. HIV/AIDS CRS — New York, United States

• Istanbul okan university — Tuzla, Istanbul, Turkey (Türkiye)

• Clinical Research of Brandon — Brandon, Florida, United States
• Northwestern University — Chicago, Illinois, United States
• University of Michigan Medical Center — Ann Arbor, Michigan, United States
• Hassman Research Institute — Berlin, New Jersey, United States

• Istituto Clinico Humanitas — Milan, Italy

• Hospital for Special Surgery — New York, United States