1Unit of Epidemiology and Medical Statistics, Department of Medicine and Public Health, University of Verona, Verona, Italy; 2Centre for Research in Environmental Epidemiology (CREAL); 3Municipal Institute of Medical Research (IMIM); 4CIBER in Epidemiology and Public Health (CIBERESP); 5Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain; 6Department of Respiratory Medicine and Sleep, Landspitali University Hospital and Faculty of Medicine, University of Iceland, Reykjavik, Iceland; 7Institute of Epidemiology, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany; 8Department of Medical Sciences, Respiratory Medicine and Allergology, Uppsala University, Uppsala, Sweden; 9Respiratory Epidemiology and Public Health Group, National Heart and Lung Institute, Imperial College, London, United Kingdom; 10Catalan Institution for Research and Advanced Studies (ICREA), Barcelona, Spain; 11Unit 700 Epidemiology, National Institute of Health and Medical Research (INSERM), Paris, France; 12Bergen Respiratory Research Group, Institute of Medicine, University of Bergen, Bergen, Norway; 13Institute for Inhalation Biology, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany; and 14Institute of Genetic Medicine, EURAC Research, Bolzano, Italy
