Eui Joo Kim; Yun Soo Kim; Seung Kak Shin; Oh Sang Kwon; Duck Joo Choi; Ju Hyun Kim. Contrast-Enhanced Ultrasound-Guided Radiofrequency Ablation in Inconspicuous Hepatocellular Carcinoma on B-Mode Ultrasound. Turkish Journal of Gastroenterology 2019, 28, 446-452.