1. Swedish Medical Center; Seattle WA USA
2. University of Florida; Gainesville FL USA
3. Quest Clinical Research; San Francisco CA USA
4. Clinical Research Centers of America; LLC; Murray UT USA
5. Atlanta Gastroenterology Associates; Atlanta GA USA
6. Digestive Health Specialists; Winston-Salem NC USA
7. University of Pittsburgh; Pittsburgh PA USA
8. Digestive Disease Associates; Baltimore MD USA
9. Gastrointestinal Specialists of Georgia; Marietta GA USA
10. Virginia Mason Medical Center; Seattle WA USA
11. Bristol-Myers Squibb Research and Development; Princeton NJ USA
12. Bristol-Myers Squibb Research and Development; Wallingford CT USA