1. College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
2. China Conservation and Research Center for Giant Panda, Chengdu, Sichuan, China
3. Chengdu Center for Animal Disease Prevention and Control, Chengdu, Sichuan, China
4. Key Laboratory of Agricultural Bioinformatics, Ministry of Education, Sichuan Agricultural University, Chengdu, Sichuan, China