1. Department of Microbiology, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
2. Experimental Teaching Center of Preventive Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
3. Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, China
4. Department of Neonatology, Nanfang Hospital, Southern Medical University, Guangzhou, China