1. Department of General Surgery and Medical‐Surgical Specialties University of Catania Catania Italy
2. Department of Medical, Oral and Biotechnological Sciences, Faculty of Medicine and Surgery University of Chieti—Pescara “G. D'Annunzio” Chieti Italy
3. Department of Innovative Technologies in Medicine and Dentistry, Faculty of Medicine and Surgery University of Chieti—Pescara “G. D'Annunzio” Chieti Italy
4. Private practitioner Catania Italy
5. Department of Surgery, Medicine, Dentistry and Morphological Sciences with Transplant Surgery, Oncology and Regenerative Medicine Relevance University of Modena and Reggio Emilia Modena Italy