1. School of Basic Medical Sciences, Luzhou Medical College, Luzhou, China,
2. Key Laboratory of Conservation Biology on Endangered Wildlife of Sichuan Province, College of Life Sciences, Sichuan University, Chengdu, China,
3. Key Laboratory for Conservation Biology on Endangered Wildlife of Sichuan Province, Chengdu Research Base of Giant Panda Breeding, Chengdu, China, and
4. College of Life Sciences and Food Engineering, Yibin University, Yibin, China