Received: 23 May 2018
Accepted: 25 February 2019
First Online: 14 March 2019
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of the Central Hospital of Southern Ostrobothnia (11/2006), and followed the principles of the Declaration of Helsinki. All participants took part on a voluntary basis and signed their informed consent.
: Not Applicable.
: The authors declare that they have no competing interests.
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