Received: 14 July 2020
Accepted: 13 August 2021
First Online: 28 August 2021
: As this was neither an interventional nor an observational study on pharmacological treatment, in accordance with local regulations the approval of the ethical committee was not required. Italian Drug Institution. Decision of 20<sup>th</sup> March 2008. Guidelines for classification and management of observational studies on drugs. (GU n.76 of 31<sup>st</sup> March 2008) ExternalRef removed
: Not applicable.
: All authors declare that they have no competing interests.