1. Department of Cardiovasology, Yan’an University Affiliated Hospital, Yan’an 716000, China
2. Department of Pathology, Yan’an University Affiliated Hospital, Yan’an 716000, China
3. Department of Cardiology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710038, China
4. Department of Cardiology, Xi’an Central Hospital, Xi’an 710061, China