1. The Third Clinical College of Guangzhou Medical University, The Nursing College of Guangzhou Medical University, Guangzhou, People’s Republic of China.
2. Department of Nursing, Guangdong Provincial Key Laboratory of Major Obstetric Diseases; Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, People’s Republic of China.
3. Department of Obstetrics and Gynecology, Obstetrics, Guangdong-Hong Kong-Macao Greater Bay Area Higher Education Joint Laboratory of Maternal-Fetal Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, People’s Republic of China.