00323nas a2200133   4500000000100000000000100001008004100002100001200043700001500055245008600070300001200156490000700168022001400175       2010                            d1 aH. Jick1 aK. Hagberg00aMeasles in the United Kingdom 1990-2008 and the effectiveness of measles vaccines  a4588-920 v28  a0264-410x