[1
]
Department of Infectious Diseases, Istituto Superiore di Sanità (Italian National
Institute of Health), Rome, Italy. Electronic address: patrizio.pezzotti@iss.it.
[2
]
Department of Infectious Diseases, Istituto Superiore di Sanità (Italian National
Institute of Health), Rome, Italy.
[3
]
Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy.
[4
]
National Center of Health Technology Assessment, Istituto Superiore di Sanità, Rome,
Italy.
[5
]
Department of Economics, Roma Tre University, Rome, Italy.
[6
]
Istituto Superiore di Sanità, Rome, Italy; Institute of Hygiene and Public Health,
Catholic University of the Sacred Heart, Rome, Italy.