1. Institute of MedicineChung Shan Medical University Taichung Taiwan
2. Department of Obstetrics and GynecologyChiayi Chang Gung Memorial Hospital Chiayi Taiwan
3. Department of NursingChang Gung University of Science and Technology Chiayi Taiwan
4. Department of Medical ResearchChung Shan Medical University Hospital Taichung Taiwan
5. School of Medicine, Chung Shan Medical University Taichung Taiwan
6. Department of Obstetrics and GynecologyChung Shan Medical University Hospital Taichung Taiwan
7. Post‐Baccalaureate Program in Nursing, College of NursingTaipei Medical University Taipei Taiwan
8. Department of Obstetrics and GynecologyChanghua Christian Hospital Changhua Taiwan