Published on in Vol 8, No 7 (2020): July
                                    Preprints (earlier versions) of this paper are
                                    available at
                                    https://preprints.jmir.org/preprint/17784, first published
                                    .
                                

1 Medical University of South Carolina, Charleston, SC, United States
2 University of South Florida, Tampa, FL, United States
