1. School of Nursing, Shanghai Jiao Tong University, Shanghai 200025, China
2. Institute of Nursing Research and Department of Nursing of Fourth Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310058, China
3. SAS Institute, Inc, Cary, NC 27513, USA
4. Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
5. Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, China