Henshaw, MBBS, MMed, FANZCA, FFPMANZCA, J. S. “Do Transdermal Opioids Reduce Healthcare Use in an Australian Rural Pain Population? A Comparison With Oral Opioids”. Journal of Opioid Management, vol. 7, no. 2, Jan. 2018, pp. 135-44, doi:10.5055/jom.2011.0056.