1. Department of Anesthesiology, Pu’ai Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 76 Jiefang Avenue, Qiaokou District, Wuhan, Hubei, China
2. Department of Gynaecology and Obstetrics, The First Affiliated Hospital, Sun Yat-sen University, No. 58, Zhongshan 2nd Road, Yuexiu District, Guangzhou, China
3. Department of Gynaecology and Obstetrics, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, No. 26, Shengli Street, Wuhan, Hubei, China
4. Department of Internal Medicine, Amcare Primary Care & Out Patient Services Center, Building 3, Anhui Beili Yiyuan, Beiyuan Road, Chaoyang District, Beijing, China
5. Operation Room, Wuhan Central Hospital, Tongji Medical College, Huazhong University of Science and Technology, Gusao Shu No. 16, Jiang’an District, Wuhan, China
6. Department of Anesthesiology, The Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, No. 56, Lingyuan West Road, Guangzhou, China
7. Department of Orthopedics, The First Affiliated Hospital of Sun Yat-sen University, No. 58, Zhongshan 2nd Road, Yuexiu District, Guangzhou, China