PT - JOURNAL ARTICLE AU - CHRIS O'CALLAGHAN AU - PETER W BARRY TI - How to choose delivery devices for asthma AID - 10.1136/adc.82.3.185 DP - 2000 Mar 01 TA - Archives of Disease in Childhood PG - 185--187 VI - 82 IP - 3 4099 - http://adc.bmj.com/content/82/3/185.short 4100 - http://adc.bmj.com/content/82/3/185.full SO - Arch Dis Child2000 Mar 01; 82