Received: 6 July 2017
Accepted: 12 February 2018
First Online: 27 February 2018
Ethics approval and consent to participate
: This study was carried out under the approval of the ethics committee (OPBA) of the University of Padua: Protocol No. 50/2016. Animal owner’s consent was obtained before each procedure.
: Not applicable.
: The authors declare that they have no competing interests.
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