1. Core Laboratory Glycobiol and Glycoengn, College of Basic Medical Sciences, Dalian Medical University, Dalian, Liaoning 116044, P.R. China
2. Department of Oncology, Qingdao Central Hospital, Qingdao, Shandong 266042, P.R. China
3. Department of Biochemistry and Molecular Biology, Key Laboratory of Tumor Molecular Biology, Binzhou Medical University, Yantai, Shandong 264003, P.R. China