00461nas a2200169   4500000000100000000000100001008004100002100001400043700001600057700001200073700001700085700001500102245014200117300001100259490000700270022001400277       2013                            d1 aT. Hammad1 aA. Margulis1 aY. Ding1 aM. Strazzeri1 aH. Epperly00aDetermining the predictive value of Read codes to identify congenital cardiac malformations in the UK Clinical Practice Research Datalink  a1233-80 v22  a1053-8569