1. Department of Environmental Medicine, University of Southern Denmark, Odense, Denmark
2. Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
3. Paediatric Clinic, Rigshospitalet - National University Hospital, Copenhagen, Denmark
4. Department of Occupational Medicine and Public Health, Faroese Hospital System, Tórshavn, Faroe Islands, Denmark
5. Department of Biostatistics, University of Copenhagen, Copenhagen, Denmark