1. Basic and Clinical Immunology; Faculty of Medicine, University of Porto; Porto Portugal
2. Centro Hospitalar São João; Porto Portugal
3. INEGI - Institute of Science and Innovation in Mechanical Engineering and Industrial Management; Porto Portugal
4. Epidemiology Research Unit; Institute of Public Health (EPIUnit); University of Porto; Porto Portugal
5. National Institute of Health Dr Ricardo Jorge; Porto Portugal
6. Faculty of Nutrition and Food Sciences; University of Porto; Porto Portugal
7. Epidemiology of Allergic and Respiratory Diseases Department; Institut Pierre Louis d'Epidémiologie et de Santé Publique; INSERM and UPC; Paris France