1. Department of Echocardiography Nanjing First Hospital, Nanjing Medical University Nanjing China
2. Department of Ultrasonography Women's Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital) Nanjing China
3. Department of Prenatal Diagnosis Women's Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital) Nanjing China
4. Department of Pathology Nanjing Hospital of Traditional Chinese Medicine, The Third Affiliated Hospital of Nanjing University of Chinese Medicine Nanjing China