1 Institute for Data, Systems, and Society, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; MIT Critical Data, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
2 MIT Critical Data, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Department of Medicine, Beth Israel Deaconess Medical Center, Boston, MA, USA; Department of Biostatistics, Harvard T H Chan School of Public Health, Boston, MA, USA. Electronic address: lceli@mit.edu.
3 MIT Critical Data, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.