1. Dept. of Epidemiology, University of Florida, Gainesville, FL, USA
2. Max-Planck-Institut für Informatik, Saarbrücken, Germany
3. Informa Pro, llc, Rome, Italy
4. University Magna Graecia, Viale Europa, Catanzaro, Italy
5. University of Siena, Policlinico Le Scotte, Viale Bracci, Siena, Italy