1. Haikou Customs District P.R.China Haikou Hainan China
2. Hainan Province People's Hospital Haikou Hainan China
3. Harbin Customs District P.R.China Harbin Heilongjiang China
4. Chongqing Customs District P.R.China Chongqing China
5. Institute of Animal Science and Veterinary MedicineHainan Academy of Agricultural Sciences Haikou Hainan China
6. Jinzhou Medical University Jinzhou China
7. College of Animal Science and TechnologyHainan University Haikou Hainan China