1. State Key Laboratory of Veterinary Etiological BiologyNational Foot and Mouth Diseases Reference LaboratoryKey Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research InstituteChinese Academy of Agricultural Sciences Lanzhou Gansu P. R. China
2. Program in Virology, Division of Medical SciencesHarvard Medical School Boston MA U.S.A.
3. Department of Biological Chemistry and Molecular PharmacologyHarvard Medical School Boston MA U.S.A.
4. Program in Cellular and Molecular MedicineBoston Children's Hospital MA U.S.A.