1. Department of Pediatrics; Head of Pediatric Allergy Unit; H. Materno-Infantil Virgen de las Nieves; Granada Spain
2. Pediatric Allergy and Pulmonology Unit; Reina Sofia Children′s University Hospital; Córdoba Spain
3. Pediatric Service; Carlos Haya Hospital; Málaga Spain
4. Complejo Hospitalario de Navarra; Pamplona Spain
5. Sección de Alergología. Hospital General Universitario de Elda; Elda (Alicante) Spain
6. IMIBIC; Hospital Universitario Reina Sofia; ARADYAL; Córdoba Spain
7. Allergy Service and Department of Biomedical and Diagnostics Sciences; Institute for Biomedical Research of Salamanca (IBSAL); University Hospital of Salamanca; Salamanca Spain