1. Hans Christian Andersen Children's Hospital; Odense University Hospital; Odense Denmark
2. Department of Clinical Research; Faculty of Health Sciences; University of Southern Denmark; Odense Denmark
3. Ilulissat Healthcare Center; Avannaa Greenland
4. Center for Health Research in Greenland; National Institute of Public Health; Copenhagen Denmark
5. Pediatric Department; Queen Ingrid's Hospital; Nuuk Greenland
6. Department of Paediatrics; Haukeland University Hospital; Bergen Norway
7. Department of Clinical Science; University of Bergen; Bergen Norway
8. Environment and Health/Youth Health Care; Department of Public Health and Primary Care; KU Leuven; University of Leuven; Leuven Belgium