PT - JOURNAL ARTICLE ED - , TI - Back pain self management groups led by lay people increased self care confidence and reduced activity limitations at 6 months AID - 10.1136/ebn.2.4.119 DP - 1999 Oct 01 TA - Evidence Based Nursing PG - 119--119 VI - 2 IP - 4 4099 - http://ebn.bmj.com/content/2/4/119.short 4100 - http://ebn.bmj.com/content/2/4/119.full SO - Evid Based Nurs1999 Oct 01; 2