مؤلف: Michael D. Crowell

Brian E. Lacy, MD, Ph DDartmouth-Hitchcock Medical Center, Division of Gastroenterology, Lebanon, NH, USA. Michael D. Crowell, Ph DMayo Clinic, Department of Medicine, Division of Gastroenterology and Hepatology, Scottsdale, AZ, USA. John K. Di Baise, MDMayo Clinic, Department of Medicine, Division of Gastroenterology and Hepatology, Scottsdale, AZ, USA.