VCU Pauley Heart Center, Virginia Commonwealth University, Richmond, VA, USA. Department of Cardiovascular and Thoracic Sciences, Catholic University of the Sacred Heart, Rome, Italy. Interventional Cardiology Service, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina. Health Science Statistics Applied Laboratory (LEACS), Pharmacology and Toxicology Department, School of Medicine, University of Buenos Aires, Buenos Aires, Argentina. Department of Cardiac Thoracic, Vascular Sciences and Public Health, University of Padua, Padua, Italy. Division of Cardiology, Policlinico Casilino, Rome, Italy. Department of Kinesiology & Health Sciences, College of Humanities & Sciences, Virginia Commonwealth University, Richmond, VA, USA. Tompkins-McCaw Library for the Health Sciences, VCU Libraries Virginia Commonwealth University, Richmond, VA, USA. Department of Pharmacotherapy & Outcomes Science, Virginia Commonwealth University, Richmond, VA, USA. Department of Medical-Surgical Sciences and Biotechnologies, Sapienza University of Rome, Latina, Italy. Mediterranea Cardiocentro, Napoli, Italy. VCU Pauley Heart Center, Virginia Commonwealth University, Richmond, VA, USA. dldixon@vcu.edu. Department of Pharmacotherapy & Outcomes Science, Virginia Commonwealth University, Richmond, VA, USA. dldixon@vcu.edu.