1. Department of Obstetrics Nursing, West China Second University Hospital, Sichuan University, Key Laboratory of Birth Defects and Related Diseases of Women and Children Sichuan University, Ministry of Education, West China Nursing School, Sichuan University, Chengdu, People’s Republic of China
2. School of Nursing, Southwest Medical University, Luzhou, People's Republic of China
3. School of Nursing, China Medical University, Taichung, Taiwan
4. Department of Nursing, China Medical University Hospital, Taichung, Taiwan
5. Department of Nursing, The Affiliated Hospital of Southwest Medical University, Luzhou, People’s Republic of China