Si Li-Fang, Chen Shu-Lin, Cheng Xiang-Chao, Qing Su-Zhu, Si Xian-Li, Zhang Xiao-Ying, Wang Jin-Yi, Xu Yong-Ping and Fan Guang-Li
Journal of Animal and Veterinary Advances 9 ( 16 ): 2194 - 2199 , 2010