1. Section of Preventive Cardiology and Rehabilitation, Robert and Suzanne Tomsich Department of Cardiovascular Medicine, Miller Family Heart, Vascular and Thoracic Institute, Cleveland Clinic , 9500 Euclid Ave., Desk JB-1, Cleveland, OH 44195 , USA
2. Department of Thoracic and Cardiovascular Surgery, Miller Family Heart, Vascular and Thoracic Institute, Cleveland Clinic , 9500 Euclid Ave., Desk J4-1, Cleveland, OH 44195 , USA