[1] Hong Kong Univ Sci & Technol, Div Life Sci, Kowloon, Hong Kong, Peoples R China
[2] Harvard Med Sch, Brigham & Womens Hosp, Boston, MA USA
[3] City Univ Hong Kong, Jockey Club Coll Vet Med & Life Sci, Dept Infect Dis & Publ Hlth, Kowloon, Hong Kong, Peoples R China