Affiliation: | 1. Division of Infectious Diseases, Faculty of Medicine, Thammasat University, Pathumthani, Thailand;2. Department of Applied Statistics, Faculty of Science, King Mongkut''s Institute of Technology, Ladkrabang, Thailand;3. Division of Infectious Diseases, Washington University School of Medicine, St Louis, MO;4. Division of Infectious Diseases, Rush University Medical Center, Chicago, IL |