Published on in Vol 6, No 2 (2018): Apr-Jun
                                    Preprints (earlier versions) of this paper are
                                    available at
                                    https://preprints.jmir.org/preprint/9080, first published
                                    .
                                

1 Department of Clinical and Translational Science, Creighton University, Omaha, NE, United States
2 School of Interdisciplinary Informatics, Information Science and Technology, University of Nebraska, Omaha, NE, United States
