University of Melbourne - Allergy and Lung Health Unit, University of Melbourne - Allergy and Lung Health Unit, University of Melbourne - Allergy and Lung Health Unit, Monash University - School of Public Health and Preventive Medicine, University of Melbourne - Allergy and Lung Health Unit, University of Melbourne - Allergy and Lung Health Unit, University of Melbourne - Allergy and Lung Health Unit, University of Melbourne - Allergy and Lung Health Unit, University of Melbourne - Allergy and Lung Health Unit, Monash University, Monash University, Monash University - School of Clinical Sciences, Cancer Council Victoria, University of New South Wales (UNSW) - Prince of Wales Clinical School, University of Queensland, Flinders University, University of Queensland - School of Public Health, Carlos III Institute of Health - CIBER de Epidemiología y Salud Pública (CIBERESP), University of Verona, Carlos III Institute of Health - CIBER de Epidemiología y Salud Pública (CIBERESP), La Trobe University, Imperial College London - MRC-PHE Centre for Environment and Health, University of Bergen - Haukeland University Hospital, University of Melbourne - Allergy and Lung Health Unit and University of Melbourne - Allergy and Lung Health Unit