Bäumlein, Martin
Klasan, Antonio
Klötzer, Christine
Bockmann, Benjamin
Eschbach, Daphne
Knobe, Matthias
Bücking, Benjamin
Ruchholtz, Steffen
Bliemel, Christopher
Article History
Received: 11 December 2019
Accepted: 13 March 2020
First Online: 11 April 2020
Ethics approval and consent to participate
: A positive ethics approval (AZ 56/17) was obtained by the local ethics committee (Philipps-Universität, Marburg, Fachbereich Medizin Dekanat /Ethikkommission).
: Not applicable.
: As associate editor, KM is a member of the editorial board of BMC Musculoskeletal. The corresponding author declares, on behalf of all other authors, that there are no conflicts of interest.