Received: 7 September 2020
Accepted: 17 March 2021
First Online: 6 April 2021
: Written informed consent was obtained from all participants. The trial was reviewed by the Institutional Review board (IRB) of the Landesärztekammer Baden-Württemberg without having concerns. The study was retrospectively registered (13 July 2018) in the German Clinical Trials Register (DRKS00014277), ttps://ExternalRef removed.
: Permission was obtained from the subject in Fig. InternalRef removed and Fig. InternalRef removed for the inclusion of these photographs in the publication.
: Christiane Schön, Claudia Reule, Katharina Knaub, Antje Micka, Manfred Wilhelm, Wilfried Alt, and Daniel Menzel declare that there is no conflict of interest regarding the publication of this paper. Lonza Consumer Health Inc. sponsored the study. The sponsor was involved in the discussions on the study design and on the outcome measures prior to study start. Study conduction, data collection and analysis, as well as drafting the publication was independently undertaken by BioTeSys GmbH.