1. Microbiology and Immunology, Guangdong Medical College, Dongguan, Guangdong, China.
2. Epidemiology and Biostatistics Department, School of Public Health, Guangdong Medical College, Dongguan, Guangdong, China.
3. Clinical Laboratory, Wanjiang Hospital of Dongguan, Dongguan, Guangdong, China.
4. Traditional Chinese Medicine and New Drug Research Institute, Guangdong Medical College, Dongguan, Guangdong, China.
5. Cancer Institute of Guangdong Medical College, Dongguan, Guangdong, China.
6. Pathology Departments, Guangdong Medical College, Dongguan, Guangdong, China.