Effect of surgical liver resection on circulating tumor cells in patients with hepatocellular carcinoma oleh Jing-jing Yu, Wei Xiao, Shui-lin Dong, Hui-fang Liang, Zhi-wei Zhang, Bi-xiang Zhang, Zhi-yong Huang, Yi-fa Chen, Wan-guang Zhang, Hong-ping Luo, Qian Chen, Xiao-ping Chen