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