Received: 16 October 2018
Accepted: 15 May 2019
First Online: 4 June 2019
Ethics approval and consent to participate
: The study was approved by the local Ethics Committee (Comitato Etico di Area Vasta Emilia Centro Italia) on April 18, 2018 (CE-AVEC 201/2018/Oss/AOUFe). Written informed consent was obtained from patients, and data collection and analysis was performed in compliance with the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.
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