6Shiying YU, Yan SUN, Haichun ZHANG, et al. Transdermal fentanyl for management of cancer pain in elderly patients in China [J]. Chin German J Clin Oncol, 2004, 3 (2) : 85-89.
7Sandblom G, Carlsson P, Senufalt K, et al. A population-based study of pain and quality of life during the year before death in men with prostate cancer [J]. Br J Cancer, 2004, 90 (6) : 1163-1168.
8Levy MH. Advancement of opioid analgesia with controlled-release MS contin. Eur J Pain,2001,5(Suppl A) :113-116.
9Winston C, et al. The use of controlled-release MS contin for the treatment of chronic cancer pain. A randomized double-blind study. J Pain sympom manage, 1998,16:205-211.
10Barbara S, Elena B, Salvatore D P, et al. MS contin Controllodrelease as first-choice therapy for moderate-to-severe cancer Pain in Italian Patients : Results of an Open-Label, Multicentre, Observational Study. Clinical Drug Investigation,2008,28(7) :399-407.