1 Italian National Blood Centre, National Institute of Health, Rome, Italy IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan, Italy.
2 Information Systems, Ministry of Health, Rome, Italy.
3 Italian National Blood Centre, National Institute of Health, Rome, Italy.
4 Italian National Blood Centre, National Institute of Health, Rome, Italy Faculty of Medicine and Psychology, "Sapienza" University of Rome, Rome, Italy.