00380nas a2200133   4500000000100000000000100001008004100002100001500043700001400058245014100072300001200213490000700225022001400232       2009                            d1 aY. Punekar1 aA. Sheikh00aEstablishing the sequential progression of multiple allergic diagnoses in a UK birth cohort using the General Practice Research Database  a1889-950 v39  a0954-7894