1. Centre for Ecology and Hydrology, Wallingford, Oxfordshire, United Kingdom
2. INSERM, U707, Paris, France
3. UPMC Université Paris 06, Faculté de Médecine Pierre et Marie Curie, UMR S 707, Paris, France
4. Computational Epidemiology Laboratory, Institute for Scientific Interchange, Turin, Italy
5. Institute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands
6. Department of Civil and Structural Engineering, University of Sheffield, Sheffield, United Kingdom
7. Center for Complex Networks and Systems Research, School of Informatics and Computing, and
8. Pervasive Technology Institute, Indiana University, Bloomington, Indiana, USA
9. Institute for Scientific Interchange, Turin, Italy