1. EPIUnit, Institute of Public Health University of Porto Porto Portugal
2. Laboratory for Integrative and Translational Research in Population Health (ITR) Porto Portugal
3. Center for Environmental and Respiratory Health Research, Faculty of Medicine University of Oulu Oulu Finland
4. Serviço de Imunoalergologia Centro Hospitalar Universitário São João Porto Portugal
5. Basic and Clinical Immunology Unit, Department of Pathology, Faculty of Medicine University of Porto Porto Portugal