1. Department of Nursing Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan China
2. School of Nursing Tongji Medical College Huazhong University of Science and Technology Wuhan China
3. College of Nursing University of Hama Hama Syria
4. Clinical of Nursing Division of Obstetrics Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan China