Gudin, MD, J. “Effect of Physical Manipulation on the Oral Pharmacokinetic Profile of Xtampza® ER (oxycodone DETERx® formulation): A Review of Published Studies”. Journal of Opioid Management, vol. 16, no. 2, Mar. 2020, pp. 127-39, doi:10.5055/jom.2020.0559.