1 Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties (ProMISE) University of Palermo, Italy. Cardiology Unit, University Hospital "Paolo Giaccone", Palermo, Italy.
2 Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties (ProMISE) University of Palermo, Italy. Cardiology Unit, University Hospital "Paolo Giaccone", Palermo, Italy. Electronic address: vpeppe80@gmail.com.