In the published article, there was an error in the Acknowledgments section. The Coperio Centre was mentioned as an external recruitment site. However, no participants were recruited from the Coperio Centre. The corrected Acknowledgments section appears below:
Acknowledgments
We want to thank Espen Odden, Thorvald Andersen, Kjetil Uldahl, Ingvild Jørstad, Manuel Jorge da Silva Dinis, and Åse Møretrø Moen for the help during the group-based ACT treatment period. We also want to thank the following research assistants: Inger Marie Andreassen, Adrian Dahl Askelund, Dani Beck, Sandra Aakjær Bruun, Jenny Tveit Kojan, Nils Eivind Holth Landrø, Elise Solbu Kleven, Julie Wasmuth, and Ellen Høgenes. Further, we thank Kari Agnes Myhre and Erlend Bøen, MD, Ph.D. at Diakonhjemmet Hospital, Division of Psychiatry for the help and support during the recruiting period. We also thank our external recruitment sites, Unicare, Torgny Syrstad, MD, Synergi Helse AS, and Lovisenberg Hospital.
The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated.
Publisher's note
All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article, or claim that may be made by its manufacturer, is not guaranteed or endorsed by the publisher.