1 Department of Sense Organs, Sapienza University of Rome, Italy; Directorate of Health and Hygiene, Vatican City State. Electronic address: massimo.ralli@uniroma1.it.
2 Directorate of Health and Hygiene, Vatican City State; Department of Anesthesiology, Intensive Care and Emergency Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.
3 Directorate of Health and Hygiene, Vatican City State.
4 Directorate of Health and Hygiene, Vatican City State; Department of Health Care Surveillance and Bioethics, section of Legal Medicine, Università Cattolica del Sacro Cuore, Rome, Italy; Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.