Karatzias, T., Power, K., Brown, K., McGoldrick, T., Begum, M., Young, J., Loughran, P., Chouliara, Z., & Adams, S. (2011). A Controlled Comparison of the Effectiveness and Efficiency of Two Psychological Therapies for Posttraumatic Stress Disorder: Eye Movement Desensitization and Reprocessing vs. Emotional Freedom Techniques. Journal of Nervous and Mental Disease, 199(6), 372-378. https://doi.org/10.1097/nmd.0b013e31821cd262