1. National Center for Communicable Diseases, Ministry of Health; NCCD-Campus; Ulaanbaatar Mongolia
2. Division of Virology, Department of Infection and Immunity; Jichi Medical University School of Medicine; Shimotsuke Tochigi Japan
3. Division of Pathology, Department of Basic Veterinary Medicine; Inner Mongolia Agricultural University College of Veterinary Medicine; Hohhot Inner Mongolia China