00320nas a2200133   4500000000100000008004100001100001200042700001200054700001500066700001500081245007200096300001100168490000700179       2002                            d1 aGray H.1 aDunn L.1 aNeal Bruce1 aMacmahon S00aThe incidence of heterotopic bone formation after major hip surgery  a808-210 v72