[1] Zhejiang Univ, Sch Med, Affiliated Hosp 1, Dept Thorac & Cardiovasc Surg, Hangzhou 310003, Zhejiang, Peoples R China
[2] Wenzhou Med Univ, Sch Med, Affiliated Taizhou Hosp, Dept Thorac & Cardiovasc Surg, Taizhou, Peoples R China
[3] Zhejiang Univ, Sch Med, Dept Ultrasound, Affiliated Hosp 1, Hangzhou, Zhejiang, Peoples R China