Snäll, Johanna
Törnwall, Jyrki
Suominen, Anna Liisa
Thorén, Hanna
Article History
Received: 15 August 2017
Accepted: 9 January 2018
First Online: 16 January 2018
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: The study protocol was approved by the Ethics Committee of the Department of Surgery and the Internal Review Board of the Division of Musculoskeletal Surgery, Helsinki University Hospital, Finland (Dno 33/E6/06). Informed consent was obtained from all participants.All procedures performed in the study were in accordance with the ethical standards of the institutional research committee and with the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards.