In the Original Investigation titled “Learning Curve for Robot-Assisted Neck Dissection in Head and Neck Cancer: A 3-Year Prospective Case Study and Analysis” published in the December 2014 issue of JAMA Otolaryngology–Head and Neck Surgery (2014;139[12]:1191-1197), author information was omitted from the Article Information section. Drs Chang and Koh contributed equally to the work. The article has been corrected online.