The University of Sydney - Faculty of Medicine and Health, National Hospital of Tropical Diseases, The University of Sydney, The University of Sydney - Woolcock Institute of Medical Research, National Hospital of Tropical Diseases, National Hospital of Tropical Diseases, National Hospital of Tropical Diseases, The University of Sydney - Woolcock Institute of Medical Research, The University of Sydney - Woolcock Institute of Medical Research, The University of Sydney - Woolcock Institute of Medical Research, The University of Sydney - Woolcock Institute of Medical Research, The University of Sydney - Woolcock Institute of Medical Research, Hanoi Center for Disease Control (CDC), Hanoi Center for Disease Control (CDC), Centre for Disease Control Da Nang, Centre for Disease Control Da Nang, Centre for Disease Control Quang Nam, Da Nang Lung Hospital, Quang Nam Pham Ngoc Thach Hospital, Quang Nam Pham Ngoc Thach Hospital, Hoa Vang District Health Center, The University of Sydney - Faculty of Medicine and Health, Woolcock Institute of Medical Research, Vietnam and The University of Sydney - Central Clinical School