1. Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Ya'an, China.
2. Sichuan Entry-Exit Inspection and Quarantine Bureau, Chengdu, China.
3. The Sichuan Key Laboratory for Conservation Biology on Endangered Wildlife-Developing Toward a State Key Laboratory for China, Chengdu Research Base of Giant Panda Breeding, Chengdu, Sichuan, China.
4. China Conservation and Research Center for Giant Panda, Wolong, China.
5. Department of Chemistry, College of Life and Basic Science, Sichuan Agricultural University, Ya'an, China.