00447nas a2200193   4500000000100000000000100001008004100002100001400043700001200057700001600069700001400085700001700099700001300116700001200129245008000141300001000221490000800231022001400239       2004                            d1 aL. Smeeth1 aC. Cook1 aE. Fombonne1 aL. Heavey1 aL. Rodrigues1 aP. Smith1 aA. Hall00aMMR vaccination and pervasive developmental disorders: a case-control study  a963-90 v364  a0140-6736