00350nas a2200145   4500000000100000000000100001008004100002100001400043700001500057700001200072245008900084300001000173490000700183022001400190       2011                            d1 aL. Parkin1 aK. Hagberg1 aH. Jick00aComprehensive comparison of drug prescribing in the United States and United Kingdom  a623-90 v31  a0277-0008