1 Presidio Ospedaliero "Maria SS Addolorata", ASL Salerno, Eboli, Salerno, Italy.
2 Department of Medicine, Surgery and Dentistry, "Scuola Medica Salernitana", University of Salerno, Salerno, Italy.
3 Department of Medicine, Surgery and Dentistry, "Scuola Medica Salernitana", University of Salerno, Salerno, Italy. Electronic address: nrosa@unisa.it.