Text and Data Mining valid from 2018-06-21
Received: 24 January 2018
Accepted: 18 May 2018
First Online: 21 June 2018
Ethics approval and consent to participate
: The study complies the principles of the Declaration of Helsinki (2013) and was approved by the local ethical committee (#09812, University Hospital Cologne). Written informed consent was available for each participant who was involved in this study. Each participant gave his consent for the use of the anonymised data including demographic data, medical images and clinical scores.
: The author MJ Scheyerer is member of the Editorial Board of the journal BMC Musculosceletal Disorders. All other authors declare that they have no competing interests.
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