9Hongming Pan,Zaiyun Zhang.Efficacy and tolerability of oxycodone HCl controlled-release tablets on moderate to severe cancer pain.Clin Drug Invest,2007,27 (4):259-267.
10Greiner W,Lehmann K,Eamshaw S,et al.Economic evaluation of durogesic in moderate to severe,nonmalignant,chronic pain in Germany.Eur J Econ,2006,7(4):290-296.