1. Laboratory of Animal Genetics, Breeding and Reproduction in the Plateau Mountainous Region (Ministry of Education), College of Life Sciences, Guizhou University, Guiyang, Guizhou 550025, P.R. China
2. Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou 550025, P.R. China
3. School of Stomatology, Zunyi Medical University, Zunyi, Guizhou 563006, P.R. China
4. Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563006, P.R. China