1. Department of Clinical Laboratory, Jiaozhou Central Hospital of Qingdao, Qingdao, Shandong, China
2. Department of Clinical Laboratory, Qingdao City Huangdao District Hospital of Tradition Chinese Medicine, Qingdao, Shandong, China
3. Department of Clinical Laboratory, Qingdao Thoracic Hospital, Qingdao, Shandong, China