B. W. Ibach, PharmD, C. Loeber, MSN, APRN-CNP, M. Shukry, MD, T. M. Hagemann, PharmD, FCCP, FPPAG, D. Harrison, PhD, FAPhA, and P. N. Johnson, PharmD, BCPS, “Duration of intrathecal morphine effect in children with idiopathic scoliosis undergoing posterior spinal fusio”, J of Opioid Management, vol. 11, no. 4, pp. 295–303, Jul. 2015.