Department of Vascular Surgery;
Peking Union Medical College Hospital;
ChineseAcademy of Medical Sciences & Peking Union Medical College;
Beijing 100730;
China;
Department of Extracorporeal Circulation;
Fuwai Hospital;
Beijing 100037;
China;
Department of Vascular Surgery;
Weifang People's Hospital;
Shandong 261041;
China;
Department of General Surgery;
Cir Gen/Vas;
Central Hospital Centre S. Januario;
Macao;
China;