Text and Data Mining valid from 2018-05-30
Received: 24 April 2017
Accepted: 17 April 2018
First Online: 30 May 2018
Ethics approval and consent to participate
: This cross-sectional study was approved by the local Ethics Committee of the Medical Association Hamburg, Germany (Ärztekammer Hamburg, reference number: PV4570) and was carried out according to existing rules and regulations of the University Medical Center Hamburg-Eppendorf. Informed consent to the removal and use of the joints for scientific purposes was obtained from the family members.
: The authors declare that they have no competing interests.
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