1. College of Animal Science and Technology, Northwest A&F University, Yangling, China
2. National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
3. Shandong Key Laboratory of Animal Disease Control and Breeding, Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Jinan, China
4. College of Computer and Information Engineering, Tianjin Agricultural University, Tianjin, China