1. Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology
2. Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology
3. Department of Cardiology, People's Hospital, Mongol Autonomous Prefecture of Bortala
4. Department of Ultrasonography, People's Hospital, Mongol Autonomous Prefecture of Bortala
5. Hubei Key Laboratory of Biological Targeted Therapy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology