**Author details**

Yessica Rodriguez-Santana1 and Luis Peña-Quintana2,3,4\*

1 Primary Health Care "El Calero", Servicio Canario de Salud, Las Palmas, Spain

2 Unit of Pediatric Gastroenterology, Hepatology and Nutrition, Complejo Hospitalario Universitario Insular Materno-Infantil de Canarias, Las Palmas, Spain

3 Department of Clinical Sciences, University of Las Palmas de Gran Canaria, Spain

4 CIBER OBN, Spain

\*Address all correspondence to: luis.pena@ulpgc.es

© 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.
