[Song, Hui-Qun; Liu, Guo-Hua; Zhu, Xing-Quan] Chinese Acad Agr Sci, Lanzhou Vet Res Inst, Key Lab Vet Parasitol Gansu Prov, State Key Lab Vet Etiol Biol, Lanzhou, Gansu, Peoples R China.
[Gasser, Robin B.; Young, Neil D.] Univ Melbourne, Fac Vet Sci, Parkville, Vic 3052, Australia.
[Liu, Guo-Hua; Zhu, Xing-Quan] Hunan Agr Univ, Coll Vet Med, Changsha, Hunan, Peoples R China.
[Ai, Lin] Chinese Ctr Dis Control & Prevent, Natl Inst Parasit Dis, Shanghai, Peoples R China.