Received: 7 May 2020
Accepted: 15 July 2020
First Online: 28 July 2020
Ethics approval and consent to participate
: The institutional review board at the University of Campania “Luigi Vanvitelli” granted ethical approval for this study (No. 308 dated 20/51/2019). All samples were verbally informed of the purpose of the study and signed the informed consent.
: Written consent forms were signed by patients in the study for the inclusion in publication and for the use of their images.
: The authors declare that they have no competing interests.