Neurobiological underpinnings of obsessive compulsive disorder and schizophrenia: Explanations for disability and severity.

1. Wu CL, Cohen SR, Richman JM, Rowlingson AJ, Courpas GE, Cheung K, et al. Efficacy of postoperative patient-controlled and continuous infusion epidural analgesia versus intravenous patient-controlled analgesia with opioids. Anesthesiology 2005;103:1079-88. 2. Nishimori M, Ballantyne JC, Low JH. Epidural pain relief versus systemic opioid-based pain relief for abdominal aortic surgery. Cochrane Database of Systematic Reviews 2006, Issue 3. Art. No.: CD005059. DOI: 10.1002/ 14651858.CD005059.pub2 3. Beattie WS, Badner NH, Choi P. Epidural analgesia reduces postoperative myorcadial infarction: A meta-analysis. Anesth Analg 2001;93:853-8. 4. Ballantyne JC, Carr DB, deFerranti S, Suarez T, Lau J, Chalmers TC, et al. The comparative effects of postoperative analgesic therapies on pulmonary outcome: Cumulative meta-analyses of randomized, controlled trials. Anesth Analg 1998;86:598-612. 5. Bauer C, Hentz JG, Ducrocq X, Meyer N, Oswald-Mammosser M, Steib A, et al. Lung function after lobectomy: A randomised, doubleblinded trial comparing thoracic epidural ropivacaine/sufentanil and intravenous morphine for patient-controlled analgesia. Anesth Analg 2007;105:238-44. 6. Hudcova J, McNichol, Quah C, Lau J, Carr DB. Patient-controlled opioid analgesia versus conventional opioid analgesia for postoperative pain Cochrane Database of Systematic Reviews 2006, Issue 4. Art. No.: CD003348. DOI: 10.1002/14651858.CD003348.pub2 7. Bong CL, Samuel M, Ng JM, Ip-Yam C. Effects of preemptive epidural analgesia on post-thoracotomy pain. J Cardiothorac Vasc Anesth 2005;19:786-93. 8. Detterbeck FC. Efficacy of methods of intercostal nerve blockade for pain relief after thoracotomy. Ann Thorac Surg 2005;80:1550-9. 9. Koehler RP, Keenan RJ. Management of post-thoracotomy pain: Acute and chronic. Thorac Surg Clin 2006;16:287-97.