**Author details**

Luca Oscar Redaelli de Zinis1 \* and Nader Nassif<sup>2</sup>

1 Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, Section of Head and Neck Surgery, University of Brescia and Pediatric Otolaryngology Head Neck Surgery, Children's Hospital "ASST Spedali Civili", Brescia, Italy

2 Pediatric Otolaryngology Head Neck Surgery, Children's Hospital "ASST Spedali Civili", Brescia, Italy

\*Address all correspondence to: luca.redaellidezinis@unibs.it

© 2019 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
