Morris, PhD, C., K. E. Green, PhD, and R. Ghevarghese, PhC. “A Multidimensional Rasch Analysis of the Screener and Opioid Assessment for Patients With Pain-Revised”. Journal of Opioid Management, vol. 16, no. 4, July 2020, pp. 291-6, doi:10.5055/jom.2020.0583.