1. School of Nursing; The Hong Kong Baptist Hospital
2. Department of Psychiatry; The University of Hong Kong; Hong Kong
3. School of Nursing; Hong Kong Polytechnic University; Hong Kong
4. Department of Obstetrics and Gynaecology; The University of Hong Kong; Hong Kong
5. Department of Obstetrics and Gynaecology; Kwong Wah Hospital; Hong Kong
6. Department of Applied Social Studies; City University of Hong Kong; Hong Kong