Differentiation of regenerative nodule, dysplastic nodule, and small hepatocellular carcinoma in cirrhotic patients: a contrast-enhanced ultrasound–based multivariable model analysis. - Duan, Yu; Xie, Xiaoyan; Li, Qian; Mercaldo, Nathaniel; Samir, Anthony E.; Kuang, Ming; Lin, Manxia (European Radiology, 2020)