Merchant, PhD S, Provenzano, MD D, Mody, PharmD, MBA S, Ho, PhD KF, Etropolski, MD M. Composite measure to assess efficacy/gastrointestinal tolerability of tapentadol ER versus oxycodone CR for chronic pain: Pooled analysis of randomized studies. J of Opioid Management [Internet]. 2013 Jan. 1 [cited 2024 May 1];9(1):51-6. Available from: https://wmpllc.org/ojs/index.php/jom/article/view/33