1 Department of Medicine Surgery and Dentistry 'Medical School of Salerno', University of Salerno, Salerno, Italy. Electronic address: spisanti@unisa.it.
2 Department of Medicine Surgery and Dentistry 'Medical School of Salerno', University of Salerno, Salerno, Italy; Corporea, Fondazione Idis Città della Scienza, Napoli, Italy. Electronic address: mbifulco@unisa.it.