Correction: Characteristics of Acupuncture Treatment Associated with Outcome: An Individual Patient Meta-Analysis of 17,922 Patients with Chronic Pain in Randomised Controlled Trials. Author: Macpherson H, Maschino AC, Lewith G, Foster NE, Witt CM, Vickers AJ; on behalf of the Acupuncture Trialists' Collaboration. Conference/Journal: PLoS One. Date published: 2013 Dec 3 Other: Volume ID: 8 , Issue ID: 12 , Special Notes: doi: 10.1371/annotation/23629d97-3b72-474b-9d89-c7198ba43d60 , Word Count: 10 [This corrects the article on p. e77438 in vol. 8.]. PMID: 24348932