1. Health Information and Decision Sciences DepartmentFaculdade de Medicina da Universidade do PortoPortoPortugal
2. CINTESIS – Center for Research in Health Technologies and Information SystemsPortoPortugal
3. Centro Hospitalar S. João, EPEAllergy and Clinical Immunology DivisionPortoPortugal
4. Hospital and Institute CUFAllergy UnitPortoPortugal
5. Internal Medicine DepartmentCentro Hospitalar S. JoãoEPEPortoPortugal
6. Hospital CUF‐DescobertasAllergy and Clinical Immunology Division UnitLisboaPortugal
7. Faculdade de Medicina da Universidade de LisboaClínica Universitária de PneumologiaLisboaPortugal
8. Allergy and Clinical Immunology DivisionCentro Hospitalar de Vila Nova de Gaia/EspinhoEPEVN GaiaPortugal
9. Division of ImmunoallergologyCentro Hospitalar Lisboa NorteEPELisboaPortugal
10. Immunoallergology DivisionHospital do Divino Espírito SantoEPEPonta DelgadaPortugal
11. Hôpital Arnaud de VilleneuveCentre Hospitalier UniversitaireMontpellierFrance