1. Saint Francis Heart and Vascular Institute, Tulsa, OK, US
2. Department of Cardiology, Medical University of South Carolina, Charleston, SC, US
3. Department of Cardiology, University of Michigan, Ann Arbor, MI, US
4. Department of Cardiology, Rush University Medical Center, Chicago, IL, US
5. Department of Cardiology, Yeditepe University Hospital, Istanbul, Turkey.