Case Report
Copyright ©2014 Baishideng Publishing Group Inc.
World J Clin Cases. Aug 16, 2014; 2(8): 391-394
Published online Aug 16, 2014. doi: 10.12998/wjcc.v2.i8.391
Figure 2
Figure 2 Classification modified by Cave-Wallbridge[30], including type A, subtype B1, subtype B2 and type C.