one hundred and twenty one patients considered on clinical grounds to have non-asthmatic chronic airflow obstruction completed a double blind , crossover trial comparing oral prednisolone 40 mg per day with inhaled beclomethasone dipropionate 500 micrograms thrice daily , each given for 14 days , with a 14 day washout period between treatments .
C0004096
asthmatic
C0004906
beclomethasone