Hjertemed.avd. Akershus Universitetssykenhus, Nordbyhagen, Norway
Diakonhjemmets sykehus Oslo, Oslo, Norway
The Heart and Vascular Institute of Florida, St. Petersburg, Florida, United States
Metropolitan Gastroenterology Group, Chevy Chase, Maryland, United States
Affiliates in Gastroeneterology, Florham Park, New Jersey, United States
Gastrointestial Associates, PA, Jackson, Mississippi, United States
Akron Gastroenterology Associates, Inc., Akron, Ohio, United States
Lovelace Scientific Resources Florida, Miami, Florida, United States
Miami Research Associates, Miami, Florida, United States
Local Institution, Mendoza, Argentina
Midwest Cardiology Research Foundation, Columbus, Ohio, United States
Medical College of Pennsylvania, Philadelphia, Pennsylvania, United States
Guthrie Clinic, LTD, Sayre, Pennsylvania, United States
Central Cardiology Medical Clinic, Bakersfield, California, United States
Saint Louis University, St. Louis, Missouri, United States
University of California-San Diego, San Diego, California, United States
Local Institution, Milwaukee, Wisconsin, United States
Local Institution, San Antonio, Texas, United States
Local Institution, Wallingford, Connecticut, United States
Local Institution, Bellevue, Washington, United States