1 Department of General Surgery and Surgical Specialties "Paride Stefanini", Sapienza University of Rome, Azienda Policlinico Umberto I, Viale del Policlinico 155, 00161, Rome, Italy. andrea.balla@gmail.com.
2 Department of General Surgery and Surgical Specialties "Paride Stefanini", Sapienza University of Rome, Azienda Policlinico Umberto I, Viale del Policlinico 155, 00161, Rome, Italy.
3 Department of General Surgery, Università Politecnica Delle Marche, Piazza Roma 22, 60121, Ancona, Italy.