In the Original Investigation “Effect of Open-label Placebo on Children and Adolescents With Functional Abdominal Pain or Irritable Bowel Syndrome: A Randomized Clinical Trial,”1 published online January 31, 2022, there was an error in the byline. The third author given as “Joe Kossovsky, PhD, MMSc,” should have appeared as “Joe Kossowsky, PhD, MMSc.” This article has been corrected online.