Affiliation: | ? Dipartimento di Medicina Interna, Università Tor Vergata, Rome, Italy ‡ Dipartimento di Chirurgia, Unità di Chirurgia Generale, Università Tor Vergata, Rome, Italy § Centre for Infectious Disease, Institute of Cell and Molecular Science, Barts and the London Queen Mary's School of Medicine and Dentistry, London, England |