Hirvonen, Outi M. http://orcid.org/0000-0002-9229-002X
Alalahti, Jenni E.
Syrjänen, Kari J.
Jyrkkiö, Sirkku M.
Article History
Received: 15 March 2018
Accepted: 4 December 2018
First Online: 17 December 2018
Ethics approval and consent to participate
: Not applicable; the present study is based on the hospital registry data, and, since the data has already been collected for clinical purposes, no patient interventions were performed; therefore, the legislation does not mandate any ethics committee approval. However, the institutional board of TUH evaluated the study protocol and gave the permission to conduct it according to the rules of the Helsinki declaration.
: Not applicable.
: The authors declare that they have no competing interests.
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