1. CINTESIS - Faculty of Medicine of University of Porto; Porto Portugal
2. Immunoallergy Department; CUF Porto Institute; Porto Portugal
3. Immunoallergy Department; CUF Porto Hospital; Porto Portugal
4. Immunoallergy Department; CUF Descobertas Hospital; Lisbon Portugal
5. Department of Immunology; Faculty of Medical Sciences; NOVA; CEDOC; Lisbon Portugal
6. Pediatric Department; Guimarães Hospital; Guimarães Portugal
7. Immunoallergy Department; Centro Hospitalar S. João; Porto Portugal
8. Pediatric Department; Vila Franca de Xira Hospital; Vila Franca de Xira Portugal
9. Pediatric Department; Braga Hospital; Braga Portugal
10. Immunoallergy Department; Centro Hospitalar do Porto; Porto Portugal
11. Pediatric Department; Centro Hospitalar Oeste Norte; Caldas da Rainha Portugal
12. Pediatric Department; Hospital Pedro Hispano; Matosinhos Portugal
13. Pediatric Department; Santarém Hospital; Santarém Portugal
14. Pediatric Department; Faro Hospital; Faro Portugal
15. Pediatric Department; Hospital São Teotónio; Viseu Portugal
16. Immunoallergy Department; Hospital Divino Espírito Santo; Ponta Delgada Açores Portugal
17. Life and Health Sciences Research Institute (ICVS); School of Health Sciences; University of Minho; Braga Portugal
18. ICVS/3B's; PT Government Associate Laboratory; Braga/Guimarães Braga Portugal