1. Emergency Preparedness Research Evaluation & Practice Program (EPREP), Division of Policy Translation & Leadership Development, Harvard T.H. Chan School of Public Health, 677 Huntington Avenue, Boston, MA 02115, USA
2. Mathematica Policy Research, Mathematica, Princeton, NJ 08540, USA
3. Department of Biostatistics, Harvard T.H. Chan School of Public Health, 677 Huntington Avenue, Boston, MA 02115, USA
4. Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy
5. Department of Medical and Surgical Sciences, University of Bologna, 40126 Bologna, Italy