1. Department of Physiology, Xiangya School of MedicineCentral South UniversityChangsha Hunan 410078 China
2. Department of Vascular Surgery, the Second Xiangya HospitalCentral South UniversityChangsha Hunan 410011 China
3. Vascular Disease InstituteCentral South UniversityChangsha Hunan 410011 China
4. Department of Pulmonary and Critical Care Medicine, the Second Xiangya HospitalCentral South UniversityChangsha Hunan 410011 China