Risk Prediction Model Based on Magnetic Resonance Elastography-Assessed Liver Stiffness for Predicting Posthepatectomy Liver Failure in Patients with Hepatocellular Carcinoma oleh Hyo Jung Cho, Young Hwan Ahn, Min Suh Sim, Jung Woo Eun, Soon Sun Kim, Bong Wan Kim, Jimi Huh, Jei Hee Lee, Jai Keun Kim, Buil Lee, Jae Youn Cheong, Bohyun Kim