Received: 14 July 2020
Accepted: 9 December 2020
First Online: 9 January 2021
Ethics approval and consent to participate
: All procedures performed in this study were in accordance with the ethical standards of the study center and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. Prior to study participation, patients signed an informed consent form. The study protocol was approved by the Ethics Committee of the University Hospital Federico II of Naples, Italy (Protocol no. 116/19).
: Not applicable.
: The authors declare that they have no competing interests.