In the article, “Prognostic role of pretreatment neutrophil to lymphocyte ratio in breast cancerpatients: A meta-analysis”,[ which appeared in Volume 96, Issue 45 of Medicine, two authors’ affiliations were reversed.Dr. Hang-Yin Qu's affiliation should be The Department of Oncological Surgery, Shaanxi University of Chinese Medicine, Shaanxi, P.R. China.Dr. Xiao-Yi Duan's affiliation should be The Department of Radiology, the First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, P.R. China.