1. Division of Cardiology; Ferrarotto Hospital, University of Catania; Catania Italy
2. Department of Interventional Cardiology; Pitangueiras Hospital; Jundiai Sao Paulo Brazil
3. Harrington Heart and Vascular Institute, University Hospitals, Case Medical Center; Cleveland Ohio
4. Center of Biostatistics and Bioinformatics, University of Mississippi Medical Center; Jackson Mississippi
5. New Tokyo Hospital; Chiba Japan
6. Department of Biostatistics; Case Western Reserve University; Cleveland Ohio
7. Excellence Through Newest Advances (ETNA) Foundation; Catania Italy