PT - JOURNAL ARTICLE ED - , TI - Formoterol was more effective than terbutaline when taken as needed for moderate to severe asthma AID - 10.1136/ebm.6.4.105 DP - 2001 Jul 01 TA - Evidence Based Medicine PG - 105--105 VI - 6 IP - 4 4099 - http://ebm.bmj.com/content/6/4/105.short 4100 - http://ebm.bmj.com/content/6/4/105.full SO - Evid Based Med2001 Jul 01; 6