1. Institute for Health Research Hospital Universitario La Paz (IdiPAZ), Paseo Castellana 261, 28046 Madrid, Spain
2. Allergy Department, La Paz University Hospital, Paseo Castellana 261, 28046 Madrid, Spain
3. PIELenRed Consortium, 28046 Madrid, Spain
4. Center for Biomedical Research Network on Rare Diseases (CIBERER U754), 28046 Madrid, Spain