RT Journal Article SR Electronic T1 Back pain self management groups led by lay people increased self care confidence and reduced activity limitations at 6 months JF Evidence Based Nursing JO Evid Based Nurs FD BMJ Publishing Group Ltd and RCN Publishing Company Ltd SP 119 OP 119 DO 10.1136/ebn.2.4.119 VO 2 IS 4 YR 1999 UL http://ebn.bmj.com/content/2/4/119.abstract AB