Expression level of epithelial cell adhesion molecule (EpCAM) of circulating tumor cells (CTCs) of patients with NSCLC as an early indicator to monitor the effects of postoperative adjuvant chemotherapy

De Zhi Zhen, Yun Song Li, Chong Yu Su, Xu Cheng, Shi Jie Zhou, Yi Han, Da Ping Yu, Xiao Yun Song, Ning Xiao, Zhi Dong Liu, Feng Wang