AU - Ghert, Michelle AU - Petrisor, Brad TI - Subgroup Analyses: When Should We Believe Them? PT - JOUR DP - 2012 TA - The Journal of Bone & Joint Surgery PG - 61-64 VI - 94 IP - Suppl 1(E) AID - 10.2106/JBJS.L.00272 [doi] 4100 - http://dx.doi.org/10.2106/JBJS.L.00272 SO - The Journal of Bone & Joint Surgery July 18, 2012 94(Suppl 1(E)):61