1. Behavioral Pain Scale: translation, reliability, and validity in a Swedish context;Hylén;Acta Anaesthesiol Scand,2016
2. Pain management nursing: scope and standards of practice;American Nurses Association,2016
3. International Association for the Study of Pain. Part III. Pain terms, a current list with definition and notes on usage. 1194. Available at: http://www.iasp-pain.org/Eduation/Content.aspx?. Accessed April 20, 2017.
4. Updating the definition of pain;Williams;Pain,2016
5. Institute of Medicine. Relieving pain in America: a blueprint for transforming prevention, care, education, and research. Available at: http://www.iom.edu/Reports/2011/Relieving-Pain-in-America-A-Blueprint-for-Transforming-Prevention-Care-Education-Research.aspx. Accessed April 20, 2017.