R Sentineri1, T Lombardi2, F Berton3, C Stacchi4. 1. Private Practice, Genova, Italy. 2. Private Practice, Cassano allo Jonio, Italy. 3. Department of Medical, Surgical and Health Sciences, University of Trieste, Italy. 4. Department of Medical, Surgical and Health Sciences, University of Trieste, Italy. Electronic address: claudio@stacchi.it.