Zhang-Yong Ning, Xin-Tao Wu, Yan-Fen Cheng, Wen-Bao Qi, Yu-Fu An, Heng Wang, Gui-Hong Zhang, Shou-Jun Li

J Vet Sci.2012;13(3):219-222.   Published online 2012 September 20     DOI: http://dx.doi.org/10.4142/jvs.2012.13.3.219