1. Department of Obstetrics and GynaecologyThe Chinese University of Hong Kong Hong Kong SAR
2. Department of Obstetrics and GynecologyPeking University First Hospital Beijing China
3. Department of Obstetrics and GynaecologyKK Women's and Children's Hospital Singapore
4. Department of Obstetrics, Gynecology & Reproductive SciencesYale School of Medicine New Haven CT USA
5. Department of Obstetrics and GynaecologyZhongnan Hospital of Wuhan University Wuhan China
6. Department of Obstetrics and GynaecologyThe Third Affiliated Hospital of Guangzhou Medical University Guangzhou China
7. Department of Clinical and Experimental SciencesUniversity of Brescia Brescia Italy