1. School of Nursing Jinan University Guangzhou People's Republic of China
2. School of Medicine, Medical Research Center Zhejiang University Zhejiang People's Republic of China
3. Department of Gastroenterology The First Affiliated Hospital of Jinan University Guangzhou People's Republic of China
4. Community Health Centre of Jinan University Guangzhou People's Republic of China
5. The First Affiliated Hospital of Jinan University Guangzhou People's Republic of China