Re: Beaulieu AD, Peloso PM, Haraoui B, et al. Once-daily, controlled-release tramadol and sustained-release diclofenac relieve chronic pain to to osteoarthritis: a randomized controlled trial. Pain Res Manage 2008; 13:103-10, and Thorne C, Beaulieu AD, Callaghan DJ, et. al. A randomized, double-blind, crossover comparison of the efficacy and safety of oral controlled-release tramadol and placebo in patients with painful osteoarthritis. Pain Res Manage 2008; 13:93-102

回复：Beaulieu AD、Peloso PM、Haraoui B 等人。每日一次的控释曲马多和缓释双氯芬酸可缓解骨关节炎引起的慢性疼痛：一项随机对照试验。《疼痛研究与管理》2008；13：103-10；以及 Thorne C、Beaulieu AD、Callaghan DJ 等人。口服控释曲马多和安慰剂治疗疼痛性骨关节炎患者的疗效和安全性的随机、双盲、交叉比较。《疼痛研究与管理》2008；13：93-102