Acknowledgments
We sincerely thank all the individuals involved in facilitating and running the study, especially Anna Asarnoj, Karen Eline Stensby Bains, Ann Berglind, Oda C Lødrup Carlsen, Kim M Advocaat Endre, Ingvild Essen, Thea Aspelund Fatnes, Hrefna Katrín Gudmundsdottir, Peder Granlund, Sandra Götberg, Guttorm Haugen, Katarina Hilde, Gunilla Hedlin, Mari Rønning Kjendsli, Linn Landrø, Caroline-Aleksi Olsson Mägi, Live S Nordhagen, Knut Rudi, Natasha Sedergren, Ingebjørg Skrindo, Anne Cathrine Staff, Päivi Söderman, Sandra G Tedner, Ellen Tegnerud, Magdalena R Værnesbranden, and Johanna Wiik.Supplementary data to this article can be found online at 