Efficacy and Safety of Methylnaltrexone for Opioid-Induced Constipation in Patients With Chronic Noncancer Pain: A Placebo Crossover Analysis.

Viscusi ER, Barrett AC, Paterson C, Forbes WP. Efficacy and Safety of Methylnaltrexone for Opioid-Induced Constipation in Patients With Chronic Noncancer Pain: A Placebo Crossover Analysis. Reg Anesth Pain Med. 2016 Jan-Feb; 41(1):93-8.

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