作者单位:Indiana Univ Sch Med, Div Gen Surg, Indianapolis, IN 46202 USA[1]Indiana Univ Sch Med, Sect Breast Surg, Div Gen Surg, Dept Surg, Indianapolis, IN 46202 USA[2]Indiana Univ Sch Med, Div Plast Surg, 545 Barnhill Dr,Emerson Hall 232, Indianapolis, IN 46202 USA[3]