1. Department of Pathology, Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Ministry of Education, Shihezi University School of Medicine, Shihezi, Xinjiang 832003, P.R. China
2. Department of Pathology, Shandong Cancer Hospital Affiliated to Shandong University, Jinan, Shandong 250117, P.R. China
3. Department of Respiratory Medicine, Yanbian University Hospital, Yanji, Jilin 133000, P.R. China