DETAILS OF ETHICS APPROVAL
In accordance with the Declaration of Helsinki all patients signed a written detailed informed consent prior to the inclusion in the study. The study received ethical approval from the local research ethics committee of the University of Naples Federico II on June 2019 (protocol number: 75/19).
Author contributions: All the authors conform to the International Committee of Medical Journal Editors (ICMJE) criteria for authorship, contributed to the intellectual content of the study. PG, AM and LDC conceptualised the study. PG performed laparoscopic surgery. GG,ADP,AC performed anesthesia. DA, AG,LDC managed the data set and performed statistical analyses. GB, ADS and GS gave approval for the final version of the article