Wisting, L. ., Johnson, S. ., Bulik, C. ., Andreassen, O. ., Rø, Ø ., & Bang, L. . (2021). Psychometric properties of the Norwegian version of the Patient Health Questionnaire-9 (PHQ-9) in a large female sample of adults with and without eating disorders. BMC Psychiatry, 21(1), 6. https://doi.org/10.1186/s12888-020-03013-0 (Original work published 2021)