A magnetic resonance imaging (MRI)-based nomogram for predicting lymph node metastasis in rectal cancer: a node-for-node comparative study of MRI and histopathology - Liu, Yuan; Wan, Lijuan; Peng, Wenjing; Zou, Shuangmei; Zheng, Zhaoxu; Ye, Feng; Jiang, Jun; Ouyang, Han; Zhao, Xinming; Zhang, Hongmei (Quantitative Imaging in Medicine and Surgery, 2021)