Hopwood, C., Krueger, R., Watson, D., Widiger, T., Althoff, R., Ansell, E., … Zimmermann, J. (2019). Commentary on "The Challenge of Transforming the Diagnostic System of Personality Disorders". Journal of Personality Disorders, 1-4. https://doi.org/10.1521/pedi_2019_33_00 (Original work published 2019)