Published on in Vol 22, No 4 (2020): April
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/16939, first published
.
1 Brigham and Women's Hospital, Department of Anesthesiology, Pain Management Center, Chestnut Hill, MA, United States
2 Brigham and Women's Hospital, Harvard Medical School, Pain Management Center, Chestnut Hill, MA, United States
3 Pfizer, Inc, New York City, NY, United States
*these authors contributed equally