Published on in Vol 7, No 3 (2019): Jul-Sep
                                    Preprints (earlier versions) of this paper are
                                    available at
                                    https://preprints.jmir.org/preprint/14107, first published
                                    .
                                

1 Institute of Medical Informatics, University of Münster, Münster, Germany
2 Medical Faculty, University Hospital of Münster, Münster, Germany
