In the article, “The efficacy of ketamine supplementation on pain management for knee arthroscopy: A meta-analysis of randomized controlled trials”, which appears in Volume 98, Issue 27 of Medicine, Dr. Huiqin Xue should also be listed as the corresponding author. The corresponding author information for both corresponding authors should be:Correspondence: Teng Ma, No. 5 Xinhua Street, Huimin District, Huhhot, Inner Mongolia. Fundamental Department of Nursing School of Inner Mongolia Medical University, 010059 (e-mail: mateng820023@163.com). Huiqin Xue, Nursing School of Inner Mongolia Medical University, Inner Mongolia, China (xuehuiqin1977@163.com).Drs. Yawen Shen and Huiqin Xue's affiliation should be Nursing Department, The Second Affiliated Hospital of Inner Mongolia Medical University, Inner Mongolia, China.Affiliation a should appear as Department of Orthopedics and Traumatology, The Second Affiliated Hospital of Inner Mongolia Medical University, Inner Mongolia, China.