1. College of Medical Laboratory, Weifang Medical University, Weifang, Shandong 261000, P.R. China
2. Department of Pathogenic Biology, School of Basic Medicine, Qingdao University, Qingdao, Shandong 266071, P.R. China
3. Department of Pathology, The People's Hospital of Fangzi District, Weifang, Shandong 261000, P.R. China
4. Department of Thoracic Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China