Funding for this research was provided by:
Scientific Foundation Kantonsspital Aarau
Received: 5 November 2017
Accepted: 10 April 2018
First Online: 24 April 2018
Ethics approval and consent to participate
: This study was approved by the regional ethics committee (2012/008) with patients consenting to participate.
: The authors declare that they have no competing interests.
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