Maddalena De Bernardo1, Livio Vitiello2, Nicola Rosa2. 1. Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, Via Salvador Allende, Baronissi, 84081, Salerno, Italy. mdebernardo@unisa.it. 2. Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, Via Salvador Allende, Baronissi, 84081, Salerno, Italy.