1. School of Public Health, Guangdong Medical University, Dongguan 523808, China
2. Dongkeng Town Center for Disease Control and Prevention, Dongguan City 523808, China
3. School of Humanities and Management, Research Center for Quality of Life and Applied Psychology, Guangdong Medical University, Dongguan 523808, China
4. Guangdong Medical University, Dongguan 523808, China