1. Department of Oncology Internal Medicine 1, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China.
2. Department of Oncology Internal Medicine 2, and The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China.
3. Department of Respiratory, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China.