TY - JOUR AU - Haddad, F. S. DO - doi:10.1302/0301-620X.97B11.37388 UR - https://doi.org/10.1302/0301-620X.97B11.37388 TI - All levels of evidence contribute to our evolving knowledge T2 - The Bone & Joint Journal VL - 97-B IS - 11 PY - 2015 SP - 1445 EP - 1446 ER -