1. Academy of Animal and Veterinary Medicine, University of Qinghai, No. 1, Weier road, Sci-biological Industry Areas, Xining, Qinghai, The People of Republic of China
2. Laboratory of Veterinary Parasitic Diseases, Interdisciplinary Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, 1–1 Gakuen-Kibanadai-Nishi, Miyazaki 889–2192, Japan
3. Laboratory of Veterinary Anatomy, Department of Veterinary Sciences, Faculty of Agriculture, University of Miyazaki, 1–1 Gakuen-Kibanadai-Nishi, Miyazaki 889–2192, Japan