1 Gastroenterology and Emergency Endoscopy Unit, Department of Emergency, Sandro Pertini Hospital of Rome, Roma, Italy.
2 Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy.
3 Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome, Rome, Italy. Electronic address: vincenzo.cardinale@uniroma1.it.