1. Department of Cardiology, Hacettepe University Faculty of Medicine, Sıhhiye, 06100 Ankara, Turkey
2. Department of Preventive Cardiovascular Medicine, Cardiovascular Division, University of Miami Miller School of Medicine, Miami, FL, USA
3. Department of Medicine, Vagelos College of Physicians and Surgeons of Columbia University, New York, NY 10032, USA
4. Department of Pharmacological and Biomolecular Sciences, University of Milan and IRCCS Multimedica, Milano, Italy