[1]Jilin Univ, Hosp 2, Dept Thorac Surg, Changchun 130041, Jilin, Peoples R China.
[2]Xuzhou Cent Hosp, Dept Thorac Surg, Xuzhou, Jiangsu, Peoples R China.
[3]Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Jilin, Peoples R China.
[4]Lanzhou Univ, Hosp 1, Dept Otolaryngol, Lanzhou, Gansu, Peoples R China.