1. Medical Research Center, Beijing Chaoyang Hospital, Capital Medical University, Beijing, P.R. China
2. Clinical Laboratory Department, Tianjin Medical University Cancer Institute and Hospital, Tianjin, P.R. China
3. Department of Cellular and Molecular Biology, Beijing Chest Hospital, Capital Medical University, Beijing, P.R. China
4. Oncology Department, Beijing Chaoyang Hospital, Capital Medical University, Beijing, P.R. China