1. Department of Epidemiology and Public Health, University College Cork, Cork, Ireland
2. Department of Epidemiology and Public Health, Imperial College London, London, United Kingdom
3. Center for Research in Environmental Epidemiology (CREAL), Municipal Institute of Medical Research (IMIM), CIBER Epidemiologia y Salud Pública (CIBERESP), Barcelona, Spain
4. Independent Public Health Consultant, Phrisk Ltd, London, United Kingdom