1 Department of General Surgery, Qilu Hospital of Shandong University, No. 107, Wenhua West Road, Lixia District, Jinan, 250012, Shandong Province, People's Republic of China.
2 Key Laboratory for Experimental Teratology of the Ministry of Education, Department of Pathology, School of Medicine, Shandong University, Jinan, 250012, People's Republic of China.
3 Department of General Surgery, Qilu Hospital of Shandong University, No. 107, Wenhua West Road, Lixia District, Jinan, 250012, Shandong Province, People's Republic of China. zhangzonglisdu@163.com.