00363nas a2200133   4500000000100000000000100001008004100002100001300043700001800056245010500074300001100179490000700190022003200197       2004                            d1 aJ. Lewis1 aC. Brensinger00aAgreement between GPRD smoking data: a survey of general practitioners and a population-based survey  a437-410 v13  a1053-8569 (Print) 1053-8569