Sugar, S. L., Hutson, L. R., Shannon, P., Thomas, L. C., & Nossaman, B. D. (2011). Comparison of Extended-Release Epidural Morphine With Femoral Nerve Block to Patient-Controlled Epidural Analgesia for Postoperative Pain Control of Total Knee Arthroplasty: A Case-Controlled Study. the Academic Division of Ochsner Clinic Foundation.

Sugar, Scott L., Larry R. Hutson, Patrick Shannon, Leslie C. Thomas, và Bobby D. Nossaman. Comparison of Extended-Release Epidural Morphine With Femoral Nerve Block to Patient-Controlled Epidural Analgesia for Postoperative Pain Control of Total Knee Arthroplasty: A Case-Controlled Study. the Academic Division of Ochsner Clinic Foundation, 2011.

Sugar, Scott L., et al. Comparison of Extended-Release Epidural Morphine With Femoral Nerve Block to Patient-Controlled Epidural Analgesia for Postoperative Pain Control of Total Knee Arthroplasty: A Case-Controlled Study. the Academic Division of Ochsner Clinic Foundation, 2011.