1. Department of Internal Medicine, Virginia Commonwealth University, Richmond, USA
2. Scientific Clinical Institutes Maugeri, Cardiac Rehabilitation Lumezzane Institute, Brescia, Italy
3. Center for Heart and Vessel Preclinical Studies, Department of Internal Medicine, St. John Hospital and Medical Center, Wayne State University, Detroit, USA
4. Division of Human Anatomy and Physiopathology, Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy
5. General Medical Education, Department of Internal Medicine, Ascension St. John Hospital, Detroit, USA
6. Division of Cardiovascular Surgery, Verona University Hospital, Verona, Italy
7. Department of Medicine, Ascension St. John Hospital and Wayne State University School of Medicine, Detroit, USA