1. The Third Affiliated Hospital of Southern Medical University; Zunyi Medical University, Guangzhou, Guangdong Province, China
2. The First People’s Hospital of Foshan, Foshan, Guangdong Province, China
3. Guangzhou Eighth People's Hospital, Guangzhou, Guangdong Province, China
4. Panyu Central Hospital, Panyu, Guangzhou, Guangdong Province, China