Clostridium Difficile Infection

• North Alabama Research Center, LLC — Athens, Alabama, United States
• Medical Affiliated Research Center, Inc. — Huntsville, Alabama, United States
• Coastal Clinical Research, LLC, An AMR Company — Mobile, Alabama, United States
• The Pain Center of Arizona — Peoria, Arizona, United States

• North Alabama Research Center, LLC — Athens, Alabama, United States
• Lalla-Reddy Medical Corporation — Fountain Valley, California, United States
• eStudySite — La Mesa, California, United States
• San Marcus Research Clinic, Inc. — Miami, Florida, United States

• Scottsdale — Scottsdale, Arizona, United States
• Los Angeles — Los Angeles, California, United States
• Murrieta — Murrieta, California, United States
• Oakland — Oakland, California, United States

Not specified

• Azienda Ospedaliera Universitaria Policlinico di Bari - Sezione di Malattie dell'Apparato Digerente, Endoscopia e Trapianto di Fegato (D.E.T.O.) — Bari, Italy
• Università degli Studi di Perugia - Dipartimento di Medicina — Perugia, Italy
• Centro Malattie Apparato Digerente - CEMAD, Policlinico Universitario Agostino Gemelli IRCCS - Università Cattolica del Sacro Cuore — Roma, Italy

• Seattle Children's Hospital — Seattle, Washington, United States

• Detroit Medical Center — Detroit, Michigan, United States

• Stony Brook University Hospital — Stony Brook, New York, United States

• University of Leeds — Leeds, West Yorkshire, United Kingdom

• Medical College of Wisconsin, Inc. — Milwaukee, Wisconsin, United States