1 eHealth Research Group, Department of Otorhinolaryngology, Tuebingen University Hospital, Hoppe-Seyler-Str. 6, 72076, Tübingen, Germany. martin.holderried@med.uni-tuebingen.de.
2 Institute of Health Care and Public Management, University of Hohenheim, 70599, Stuttgart, Germany. martin.holderried@med.uni-tuebingen.de.
3 eHealth Research Group, Department of Otorhinolaryngology, Tuebingen University Hospital, Hoppe-Seyler-Str. 6, 72076, Tübingen, Germany.