[1]Jilin Prov Canc Hosp, Changchun, Jilin, Peoples R China.
[2]Harbin Med Univ, Canc Hosp, Harbin, Heilongjiang, Peoples R China.
[3]Beijing Canc Hosp, Beijing, Peoples R China.
[4]China Med Univ, Hosp 1, Shenyang, Liaoning, Peoples R China.
[5]307Th Hosp Chinese Peoples Liberat Army, Beijing, Peoples R China.
[6]Jilin Univ, Hosp 1, Changchun, Jilin, Peoples R China.
[7]Beijing Chest Hosp, Beijing, Peoples R China.
[8]Jilin Univ, China Japan Union Hosp, Changchun, Jilin, Peoples R China.
[9]Dalian Med Univ, Affiliated Hosp 1, Dalian, Peoples R China.
[10]China Med Univ, Shengjing Hosp, Thorac Oncol, Shenyang, Liaoning, Peoples R China.
[11]Liaoning Med Univ, Affiliated Hosp 1, Shenyang, Liaoning, Peoples R China.
[12]Chinese Acad Med Sci, Canc Hosp, Beijing, Peoples R China.
[13]Dalian Med Univ, Hosp 2, Dalian, Peoples R China.
[14]Anshan Canc Hosp, Anshan, Peoples R China.
[15]Jilin Univ, Dept Resp Med, Hosp 2, Changchun, Jilin, Peoples R China.
[16]Gen Hosp Shenyang Mil, Shenyang, Liaoning, Peoples R China.
[17]Yanbian Univ Hosp, Yanbian, Peoples R China.
[18]Liaoning Canc Hosp, Shenyang, Liaoning, Peoples R China.
[19]Shenyang Chest Hosp, Shenyang, Liaoning, Peoples R China.
[20]Dalian Municipal Cent Hosp, Dalian, Peoples R China.
[21]Daqing Oilfield Gen Hosp, Daqing, Peoples R China.
[22]Harbin Med Univ, Affiliated Hosp 2, Harbin, Heilongjiang, Peoples R China.
[23]Siping Canc Hosp, Siping, Peoples R China.
[24]Jilin City Canc Hosp, Jilin, Jilin, Peoples R China.
[25]Third Peoples Hosp Dalian, Dalian, Peoples R China.
[26]Peking Univ, Peoples Hosp, Beijing, Peoples R China.
[27]Harbin Med Univ, Affiliated Hosp 1, Harbin, Heilongjiang, Peoples R China.
[28]Jilin Municipal Cent Hosp, Jilin, Jilin, Peoples R China.