1. Department of Obstetrics and Gynecology; Far Eastern Memorial Hospital; New Taipei Taiwan
2. Cardinal Tien Junior College of Healthcare and Management; New Taipei Taiwan
3. College of Medicine; National Taiwan University; Taipei Taiwan
4. Graduate school of Biotechnology and Bioengineering; Yuan Ze University; Taoyuan Taiwan
5. School of Nursing; National Yang-Ming University; Taipei Taiwan
6. Institute of Clinical Nursing; National Yang-Ming University; Taipei Taiwan
7. Department of Nursing; National Yang-Ming University Hospital; Yilan Taiwan