1. State Key Laboratory for diagnosis and treatment of Sever Zoonotic Infectious Diseases, Key Laboratory for Zoonsis Research of the Ministry of Education, Institute of Zoonsis and College of Veterinary Medicine, Jilin University, Changchun 130062, China
2. Department of Gastrointestinal, Colorectal and Anal Surgery, China-Japan Union Hospital of Jilin University, Changchun 130031, China