ACKNOWLEDGMENTS
This research was supported by a grant from the Norwegian Research Council. We thank Gro Aasli for managing and recording data, and Thomas Bakken and Hans Christian Vangberg for their help in study acquisitions and recording data. The following individuals worked to code study details and their efforts are greatly appreciated: Lene Angell, Ragnhild Høifødt, Kine Jespersen, Hilde Jensen, Kjersti Lillevoll, and Ingvild Nyrbakk.