作者单位:Shantou Univ, Dept Head Neck & Breast Surg, Yuebei Peoples Hosp, Shaoguan, Guangdong, Peoples R[1]Sun Yat Sen Univ, Collaborat Innovat Ctr Canc Med, Dept Breast Oncol, State Key Lab Oncol South[2]Guangdong Second Prov Gen Hosp, Guangzhou, Guangdong, Peoples R China[3]