![Mayo Clinic home page [logo]](/images-global/mayologo.gif)
Give. Touch. Transform.
Share this site with others using one of these sharing tools.
To link to this article, paste this block of HTML code onto your webpage.
Guidelines for sites linking to mayoclinic.orgUniversity of Osteopathic Medicine and Health Sciences, Des Moines, IA
Oakland General Hospital, Madison Heights, MI
Geisinger Medical Center, Danville, PA
Advanced Endoscopy, Medical College of Virginia, Richmond, VA
GI, Medical College of Virginia, Richmond, VA
Nutrition, Medical College of Virginia, Richmond, VA
American Board of Internal Medicine - Internal Medicine
American Board of Internal Medicine - Gastroenterology
Associate Professor of Medicine
Constipation, functional GI disorders, disorders of intestinal motility, pharmacodynamics, obesity
See a listing of publications on PubMed, a service of the National Library of medicine.
See a description of research activities.
Learn about treatment of diseases and becoming a patient. Read more about medical services.
.
