1. Department of Medicine, Division of Gastroenterology, Mayo Clinic, 13400 East Shea Boulevard, Scottsdale, AZ 85259, USA
2. Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
3. Division of Cardiology, Mayo Clinic, Scottsdale, AZ, USA
4. Division of Cardiology, Mayo Clinic, Rochester, MN, USA