00467nas a2200181   4500000000100000000000100001008004100002100001600043700001500059700001500074700001500089700001600104700001500120245009900135300001100234490000800245022003200253       1999                            d1 aM. Frischer1 aH. Heatlie1 aS. Chapman1 aJ. Norwood1 aJ. Bashford1 aD. Millson00aShould the corticosteroid to bronchodilator ratio be promoted as a quality prescribing marker?  a247-500 v113  a0033-3506 (Print) 0033-3506