00379nas a2200169   4500000000100000008004100001100001300042700001000055700001100065700001300076700001500089700001300104245005500117300002500172490000600197050000600203       2007                            d1 aIvers R.1 aLo S.1 aLiu B.1 aBlows S.1 aBoufous S.1 aNorton R00aHelmets for preventing injury in motorcycle riders  aCD004333. [IF 4.654]0 v1  aY