1. Xiangya Nursing School of Central South University, Changsha, Peole's Republic of China
2. Changde Center for Diseases Prevention and Control, Changde, Hunan, China
3. University of California, San Francisco, California, USA
4. Rory Meyers College of Nursing, New York University, New York City, New York, USA
5. Xiangya Hospital of Centre-south University, Changsha, Hunan, China
6. Wuxi Fifth People's Hospital, Wuxi, Jiangsu, China
7. Shanghai Public Health Clinical Research Center, Shanghai, China
8. Xiangya Nursing School of Central South University, Changsha, Hunan, China