00456nas a2200181   4500000000100000000000100001008004100002100001600043700001500059700001500074700001600089700001500105700001500120245009100135300000900226490000700235022003200242       2000                            d1 aM. Frischer1 aH. Heatlie1 aS. Chapman1 aJ. Bashford1 aJ. Norwood1 aD. Millson00aRatio of inhaled corticosteroid to bronchodilator treatment and asthma hospitalisation  a8-130 v16  a0300-7995 (Print) 0300-7995