1. Department of Nursing, People's Hospital of Jianyang City , Jianyang, Sichuan , China
2. Department of Nursing, Sichuan Nursing Vocational College , Chengdu , Sichuan , China
3. Department of Nursing, People's Hospital of Deyang City , Deyang , Sichuan , China
4. Department of Nursing , Panzhihua University , Panzhihua , Sichuan , China
5. Department of Scientific Research, Sichuan Nursing Vocational College , Chengdu , Sichuan , China
6. Department of Pediatrics, Sichuan Provincial Hospital for Women and Children , Chengdu , Sichuan , China