Affiliation: | (1) Department of Medical Microbiology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia;(2) Department of Medicine, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia;(3) Present address: Laboratory of Molecular Virology and Epidemiology, AIDS Research Center, National Institute of Infectious Diseases (NIID), 1-23-1 Toyama, Shinjuku-ku, 162-8640 Tokyo, Japan |