Affiliation: | 1. Emergency and Disaster Medical Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, China;2. Department of General Surgery, The First Affiliated Hospital of Henan University, Kaifeng, China;3. Department of Obstetrics and Gynaecology, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China;4. Department of Medical Imaging, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China |