Received: 31 October 2017
Accepted: 26 December 2017
First Online: 31 January 2018
Ethics approval and consent to participate
: The study was approved by the ethics committee of the Sant’Anna Hospital, Ferrara, Italy (protocol no. 141285), and registered with ClinicalTrials.gov (NCT02907840).
: Written informed consent was obtained from the patients or their relatives for publication of their individual details. The consent forms are held by the authors and are available for review by the Editor-in-Chief of this journal.
: The authors declare that they have no competing interests.
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