1. School of Nursing, Shanghai Jiao Tong University, Shanghai, China
2. School of Nursing, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
3. Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
4. Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China