Authors: Johannes Knitza; David Simon; Antonia Lambrecht; Christina Raab; Koray Tascilar; Melanie Hagen; Arnd Kleyer; Sara Bayat; Adrian Derungs; Oliver Amft; Georg Schett; Axel J Hueber Journal: JMIR Mhealth Uhealth Date: 2020-08-12 Impact factor: 4.773