1. Department of Internal Medicine, Cleveland Clinic Foundation, Cleveland, USA, OH
2. Department of Internal Medicine, Sutter Tracy Community Hospital, Tracy, USA, CA
3. Department of Cardiovascular Medicine, Heart and Vascular and Thoracic Institute, Cleveland Clinic Foundation, Cleveland, USA, OH
4. Department of Statistics, National University Heart Centre Singapore, Singapore, Singapore
5. Department of Anesthesia, Cleveland Clinic Foundation, Cleveland, USA, OH
6. Digestive Disease and Surgery Institute, Cleveland Clinic Foundation, Cleveland, USA, OH
7. Department of Diagnostic Radiology, Heart, Vascular and Thoracic Institute, Cleveland Clinic Foundation, Cleveland, USA, OH
8. Department of Cardiology, University of Iowa Hospitals & Clinics, Iowa City, USA, IA