Correction: Predictors of opioid efficacy in patients with chronic pain: A prospective multicenter observational cohort study.

ABSTRACT: [This corrects the article DOI: 10.1371/journal.pone.0171723.].

SUBMITTER: Grosen K 

PROVIDER: S-EPMC6821103 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature