Published on in Vol 22, No 7 (2020): July
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/16136, first published
.
1 Department of General Internal Medicine and Psychosomatics, Heidelberg University Hospital, Heidelberg, Germany
2 Westphalian University of Applied Sciences, Gelsenkirchen, Germany