Faculty of Public Health University of Medicine and Pharmacy at Ho Chi Minh City Vietnam;
Center for Training of Family Medicine University of Medicine and Pharmacy at Ho Chi Minh City Vietnam;
Faculty of Public Health University of Medicine and Pharmacy at Ho Chi Minh City Vietnam;
Department of Infectious Diseases University of Medicine and Pharmacy at Ho Chi Minh City Vietnam;
Infection Control Department University Medical Center at Ho Chi Minh City Vietnam;
Department of Pediatrics University of Medicine and Pharmacy at Ho Chi Minh City Vietnam;