1. Department of Public Health, Vascular Surgery Unit, University Federico II of Naples, Napoli, Italy
2. Department of Medical and Surgical Sciences, University of Catanzaro, Catanzaro, Italy
3. Department of Public Health and Infectious Disease, Sapienza University of Rome, Roma, Italy
4. Interuniversity Center of Phlebolymphology (CIFL), International Research and Educational Program in Clinical and Experimental Biotechnology, Catanzaro, Italy
5. Vascular Surgery Unit, “Villa Sofia” Hospital, Palermo, Italy