00465nas a2200169   4500000000100000008004100001100001400042700001200056700001600068700001700084700001300101700001300114245014200127300000600269490000600275022001400281       2001                            d1 aL. Smeeth1 aA. Hall1 aE. Fombonne1 aL. Rodrigues1 aX. Huang1 aP. Smith00aA case-control study of autism and mumps-measles-rubella vaccination using the general practice research database: design and methodology  a20 v1  a1471-2458