M. P. Bonnet, A. Mignon, J. X. Mazoit, Y. Ozier and E. Marret, “Analgesic Effect and Adverse Effects of Epidural Morphine Compared to Parenteral Opioids after Elective Caesarean Section: A Systemic Review,” European Journal of Pain, Vol. 14, No. 9, 2010, pp. 894-899. doi:10.1016/j.ejpain.2010.03.003
 D. A. Graves, R. L. Batenhorst, R. L. Bennett, et al., “Morphine Requirements Using Patient-Controlled Analgesia: Influence of Diurnal Variation and Morbid Obesity,” Clinical Pharmacology, Vol. 2, No. 1, 1983, pp. 49-53.
 American Society of Anesthesiologists Task Force on Pain Management, Acute Pain Section, “Practice Guidelines for Acute Pain Management in the Perioperative Setting,” Anesthesiology, Vol. 82, No. 4, 1995, pp. 10711081. doi:10.1097/00000542-199504000-00032
 M. Silvasti, N. Svartling, M. Pitkanen and P. H. Rosenberg, “Comparison of Intravenous Patient Controlled Analgesia with Tramadol versus Morphine after Microvascular Breast Reconstruction,” European Journal of Anaesthesiology, Vol. 17, No. 7, 2000, pp. 448-555.
 M. J. Paech, J. S. Moore and S. F. Evans, “Meperidine for Patient-Controlled Analgesia after Cesarean Section. Intravenous versus Epidural Administration,” Anesthesiology, Vol. 80, No. 6, 1994, pp. 1268-1276. doi:10.1097/00000542-199406000-00014
 H. Owen, J. L. Plummer, I. Armstrong, L. E. Mather and M. J. Cousins, “Variables of Patient-Controlled Analgesia: 1. Bolus Size,” Anaesthesia, Vol. 44, No. 1, 1989, pp. 710. doi:10.1111/j.1365-2044.1989.tb11087.x
 J. V. Stapleton, K. L. Austin and L. E. Mather, “A Pharmacokinetic Approach to Postoperative Pain: Continuous Infusion of Pethidine,” Anaesthesia and Intensive Care, Vol. 7, No. 1, 1979, pp. 25-32.
 Y. Al-Tamimi, K. F. Ilett, M. J. Paech, S. J. O’Halloran and P. E. Hartmann, “Estimation of Infant Dose and Exposure to Pethidine and Norpethidine via Breast Milk Following Patient-Controlled Epidural Pethidine for Analgesia Post Caesarean Delivery,” International Journal of Obstetric Anesthesia, Vol. 20, No. 2, 2011, pp. 128134. doi:10.1016/j.ijoa.2010.12.004
 J. A. Alhashemi, Q. A. Alotaibi, M. S. Mashaat, M. T. Kaid, R. H. Mujallid and M. A. Kaki, “Intravenous Acetaminophen vs Oral Ibuprofen in Combination with Morphine PCIA after Cesarean Delivery,” Canadian Journal of Anesthesia, Vol. 53, No. 12, 2006, pp. 12001206. doi:10.1007/BF03021581
 E. J. Van Beers, C. F. Van Tuijn, P. T. Nieuwkerk, P. W. Friederich, J. H. Vranken and B. J. Biemond, “Patient-Controlled Analgesia versus Continuous Infusion of Morphine during Vaso-Occlusive Crisis in Sickle Cell Disease, a Randomized Controlled Trial,” American Journal of Hematology, Vol. 82, No. 11, 2007, pp. 955960. doi:10.1002/ajh.20944
 C. Simanski, H. H. Waldvogel and E. Neugebauer, “Postoperative Nausea and Vomiting (PONV). Clinical Significance, Basic Principles, Prevention and Therapy,” Chirurg, Vol. 72, No. 12, 2001, pp. 1471-1426.
 L. H. Eberhart, W. Seeling, B. Ulrich, A. M. Morin and M. Georgieff, “Dimenhydrinate and Metoclopramide Alone or in Combination for Prophylaxis of PONV,” Canadian Journal of Anesthesia, Vol. 47, 2000, pp. 780-785. doi:10.1007/BF03019481
 D. Rüsch, K. Becker, L. H. Eberhart, et al., “Postoperative Nausea and Vomiting (PONV)—Recommendations for Risk Assessment, Prophylaxis and Therapy—Results of an Expert Panel Meeting,” Anasthesiologie, Intensivmedizin, Notfallmedizin, Schmerztherapie, Vol. 46, No. 3, 2011, pp. 158-170.
 R. S. Sinatra, K. Lodge, K. Sibert, K. S. Chung, J. H. Chung, A. Parker and D. M. Harison, “A Comparison of Morphine, Meperidine, and Oxymorphone as Utilized in Patient Controlled Analgesia Following Cesarean Delivery,” Anesthesiology, Vol. 70, No. 4, 1989, pp. 585-590. doi:10.1097/00000542-198904000-00005
 M. Bahar, M. Rosen and M. D. Vickers, “Self-Administered Nalbuphine, Morphine and Pethidine. Comparison, by Intravenous Route, Following Cholecystectomy,” Anaesthesia, Vol. 40, No. 6, 1985, pp. 529-532.
 A. Woodhouse, A. F. T. Hobbes, L. E. Mather and M. Gibson, “A Comparison of Morphine, Pethidine, and Fentanyl in the Post-Surgical Patient-Controlled Analgesia Environment,” Pain, Vol. 64, No. 1, 1996, pp. 115-121. doi:10.1016/0304-3959(95)00082-8
 R. McKenzie, T. Rudy and M. Ponter-Hammill, “Side-Effects of Morphine Patient-Controlled Analgesia and Meperidine Patient Controlled Analgesia: A Follow up of 500 Patients,” Journal of the American Association of Nurse Anesthetists, Vol. 60, No. 3, 1992, pp. 282-286.
 H. Unlugenc, M. A. Vardar and S. Tetiker, “A Comparative Study of the Analgesic Effect of Patient-Controlled Morphine, Pethidine, and Tramadol for Postoperative Pain Management after Abdominal Hysterectomy,” Anesthesia & Analgesia, Vol. 106, No. 1, 2008, pp. 309-312.
 M. F. Khan, O. B. Omole and G. J. O. Marincowitz, “Postoperative Analgesia Following Caesarean Deliveries in a Rural Health District of South Africa,” Tropical Doctor, Vol. 39, No. 4, 2009, pp. 217-221. doi:10.1258/td.2009.070497
 S. M. Siddik, M. T. Aouad, M. I. Jalbout, L. B. Rizk, G. H. Kamar and A. S. Baraka, “Diclofenac and/or Propacetamol for Postoperative Pain Management after Cesarean Delivery in Patients Receiving Patient Controlled Analgesia Morphine,” Regional Anesthesia and Pain Medicine, Vol. 26, 2001, pp. 310-315.
 B. A. Amigboye and G. J. Hofmeyr, “Local Anaesthetic Wound Infilteration and Abdominal Nerves Block during Caesarean Section for Postoperative Pain Relief,” Cochrane Database of Systematic Reviews, Vol. 3, 2009, Article ID: CD006954.