Published on in Vol 7, No 7 (2019): July
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/13844, first published
.
1 Department of Dermatology and Allergy, University Hospital, LMU Munich, Munich, Germany
2 Department of Dermatology, University Hospital Heidelberg, University of Heidelberg, Heidelberg, Germany