[1]China Med Univ, Hosp 1, Dept Breast Surg, Shenyang 110001, Liaoning, Peoples R China.
[2]Shandong First Med Univ, Shandong Prov Hosp, Dept Breast & Thyroid Surg, Jinan 250021, Shandong, Peoples R China.
[3]China Med Univ, Hosp 1, Dept Geriatr Med, Shenyang 110001, Liaoning, Peoples R China.
[4]Jilin Canc Hosp, Dept Breast Surg, Changchun 130012, Jilin, Peoples R China.
[5]Dalian Univ, Dept Breast & Thyroid Surg, Affiliated Zhongshan Hosp, Dalian 116001, Liaoning, Peoples R China.
[6]Dalian Med Univ, Affiliated Hosp 1, Dept Oncol, Dalian 116011, Liaoning, Peoples R China.
[7]Jilin Univ, China Japan Union Hosp, Dept Breast Surg, Changchun 130033, Jilin, Peoples R China.
[8]Dalian Med Univ, Hosp 2, Dept Breast Surg, Dalian 116023, Liaoning, Peoples R China.
[9]Harbin Med Univ, Affiliated Hosp 2, Dept Breast Surg, Harbin 150081, Heilongjiang, Peoples R China.
[10]Fifth Peoples Hosp Shenyang, Dept Breast Surg, Shenyang 110023, Liaoning, Peoples R China.
[11]Liaoning Hlth Ind Grp, Dept Breast Surg, Benxi Iron & Steel Ind Grp, Gen Hosp, Benxi 117000, Liaoning, Peoples R China.
[12]Fourth Peoples Hosp Shenyang, Dept Breast Surg, Shenyang 110082, Liaoning, Peoples R China.
[13]Dalian Med Univ, Affiliated Hosp 1, Dept Breast Surg, Dalian 116011, Liaoning, Peoples R China.
[14]China Med Univ, Hosp 1, Dept Clin Epidemiol, Shenyang 110001, Liaoning, Peoples R China.
[15]China Med Univ, Hosp 1, Ctr Evidence Based Med, Shenyang 110001, Liaoning, Peoples R China.
[16]Second Hosp Jilin Univ, Dept Breast Surg, Changchun 130041, Jilin, Peoples R China.
[17]First Hosp Jilin Univ, Gen Surg Ctr, Dept Breast Surg, Changchun 130061, Jilin, Peoples R China.