Acknowledgements
Dino Rubini for graphic support in preparing the figures.
Ethics
Informed Consent: Consent form was filled out by all participants.
Peer-review: Externally and internally peer-reviewed.
Authorship Contributions
Surgical and Medical Practices: A.N.A., G.R., Concept: C.A., A.C., Design: A.C., V.L., Analysis or Interpretation: A.N.A., G.R., Literature Search: A.C., Writing: C.A., A.C.
Conflict of Interest: No conflict of interest was declared by the authors.
Financial Disclosure: The authors declared that this study received no financial support.