Corrigendum: Contrast-Enhanced CT-Based Radiomics Analysis in Predicting Lymphovascular Invasion in Esophageal Squamous Cell Carcinoma - Li, Yang; Yu, Meng; Wang, Guangda; Yang, Li; Ma, Chongfei; Wang, Mingbo; Yue, Meng; Cong, Mengdi; Ren, Jialiang; Shi, Gaofeng (Frontiers in Oncology, 2021)