Correction: A Novel Approach to Assessing Differentiation Degree and Lymph Node Metastasis of Extrahepatic Cholangiocarcinoma: Prediction Using a Radiomics-Based Particle Swarm Optimization and Support Vector Machine Model

Correction: A Novel Approach to Assessing Differentiation Degree and Lymph Node Metastasis of Extrahepatic Cholangiocarcinoma: Prediction Using a Radiomics-Based Particle Swarm Optimization and Support Vector Machine Model

Authors of this article:

Xiaopeng Yao^{1, 2} ;   Xinqiao Huang³ ;   Chunmei Yang³ ;   Anbin Hu^{1, 2} ;   Guangjin Zhou⁴ ;   Mei Ju⁵ ;   Jianbo Lei^{1, 6} ;   Jian Shu³