Published on in Vol 22, No 1 (2020): January
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/16204, first published
.
1 Massachusetts General Hospital, Boston, MA, United States
2 Computational Epidemiology Lab, Harvard Medical School, Boston, MA, United States
3 Baystate Children's Hospital, Springfield, MA, United States
4 University of Massachusetts Medical School, Springfield, MA, United States