3Meed SD. Management of cancer pain with oral controlled-release morphine sulfate[J].J Clin Pharmacol,1987,27(2):155-161.
4Maloney CM.The rectal adminstration of MS Contin: clinical implication of use in end stage cancer[J].The American Journal of Hospice Care,1989,6:34.
5Thirlwell MP. Pharmacokineticsand clinical efficacy of oral morphine solution and controlled-release morphine tablets in cancer patients[J].Cancer, 1989,63:2275.
6Bloomfield SS, Cissell GB, Mitchell J, et al. Analgesic efficacy and potency of two oral controlled-release morphine preparations[J].Clin Pharmacol Ther, 1993,53:469.
7Portenoy RK. Oral controlled-release morphine sulfate: analgesic efficacy and side effects of a 100 mg tablet in cancer patients[J].Cancer,1989,63:2284.
8Twycross RG. Managing cancer pain[J].Med Digest,1996,4(1):5.