Identification and Validation of Serum CST1 as a Diagnostic Marker for Differentiating Early-Stage Non-Small Cell Lung Cancer from Pulmonary Benign Nodules oleh Yanzhen Lai MM, Yu Wang MM, Yaxian Wu MM, Meng Wu MM, Shan Xing MM, Ying Xie MD, Shulin Chen MM, Xiaohui Li MM, Ao Zhang MD, Yi He MD, Huilan Li MM, Shuqin Dai MM, Junye Wang MM, Shudai Lin MM, Yunmeng Bai MM, Hongli Du PhD, Wanli Liu MD, PhD