1 Department of Pathology, Dalian Medical University, Dalian, 116044, People's Republic of China.
2 Teaching Laboratory of Morphology, Dalian Medical University, No. 9 West Section, Lvshun South Road, Dalian, 116044, People's Republic of China.
3 Department of Pathology, Dalian Medical University, Dalian, 116044, People's Republic of China. songbo9177@163.com.
4 Teaching Laboratory of Morphology, Dalian Medical University, No. 9 West Section, Lvshun South Road, Dalian, 116044, People's Republic of China. songbo9177@163.com.