title: Reply.
authors.affiliation: Allergy Service, Hospital Universitario Rio Hortega, Valladolid, Spain. Electronic address: aliciaarmentia@gmail.com.
authors.forename: Alicia
authors.initials: A
authors.lastname: Armentia
authors.affiliation: Allergy Service, Hospital Universitario Rio Hortega, Valladolid, Spain.
authors.forename: Beatriz
authors.initials: B
authors.lastname: Hierro Santurino
authors.affiliation: Department of Biomedical and Diagnostics Sciences, Salamanca Medical School, Salamanca, Spain.
authors.forename: Javier
authors.initials: J
authors.lastname: Mateos Conde
authors.affiliation: Department of Biomedical and Diagnostics Sciences, Salamanca Medical School, Salamanca, Spain.
authors.forename: María Teresa
authors.initials: MT
authors.lastname: Cabero Morán
authors.affiliation: Department of Biomedical and Diagnostics Sciences, Salamanca Medical School, Salamanca, Spain.
authors.forename: Jose Antonio
authors.initials: JA
authors.lastname: Canelo