1. Department of Child Healthcare and Scientific Education Section, Affiliated Maternity & Child Health Care Hospital of Nantong University, Nantong, Jiangsu, China
2. Image Center, Wuhan Asia Heart Hospital, Wuhan, Hubei, China
3. Department of Cardiology, the First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
4. Department of Cardiology, Beijing Anzhen Hospital Affiliated to Capital Medical University, Beijing, China