Chuang L, Wu C, Lin K, Hsieh C. Relative and Absolute Reliability of a Vertical Numerical Pain Rating Scale Supplemented With a Faces Pain Scale After Stroke. Phys Ther. 2014;94:129–138.

“Relative and Absolute Reliability of a Vertical Numerical Pain Rating Scale Supplemented With a Faces Pain Scale After Stroke” (January 2014), by Li-ling Chuang et al, used a vertical version of the Wong-Baker FACES Pain Rating Scale. The vertical version was not authorized by the co-developer and copyright holder of the scale, Connie Baker. The authors and the journal regret the error. Researchers and publishers interested in using or publishing the scale should contact the Wong-Baker FACES Foundation (http://wongbakerfaces.org/) for licensing information.

• © 2016 American Physical Therapy Association