1. The Chinese University of Hong Kong,T Stone Robotics Institute,the Department of Mechanical and Automation Engineering,HKSAR,China
2. Shanghai Jiao Tong University, Shanghai, China and Key Laboratory of System Control and Information Processing, Ministry of Education of China,Department of Automation
3. International Peace Maternity and Child Health Hospital, Shanghai Jiaotong University School of Medicine,Department of Obstetrics and Gynecology,Shanghai,China
4. Prince of Wales Hospital, The Chinese University of Hong Kong,Department of Obstetrics and Gynaecology,Hong Kong,China