PT - JOURNAL ARTICLE ED - , TI - Ventilation tubes did not improve quality of life in persistent otitis media with effusion AID - 10.1136/ebm.6.4.121 DP - 2001 Jul 01 TA - Evidence Based Medicine PG - 121--121 VI - 6 IP - 4 4099 - http://ebm.bmj.com/content/6/4/121.short 4100 - http://ebm.bmj.com/content/6/4/121.full SO - Evid Based Med2001 Jul 01; 6