College of Chemistry;
Alan G. MacDiarmid Institute;
Jilin University;
Changchun 130012;
P. R. China;
Department of General Surgery;
the Second Hospital;
Jilin University;
Changchun 130023;
P. R. China;
Department of Abdominal Surgery;
the Affiliated Tumor Hospital;
Harbin Medical University;
Harbin 150081;
P. R. China;