RT Journal Article SR Electronic T1 Review: existing evidence does not support nurse led interventions in chronic obstructive pulmonary disease JF Evidence Based Nursing JO Evid Based Nurs FD BMJ Publishing Group Ltd and RCN Publishing Company Ltd SP 56 OP 56 DO 10.1136/ebn.9.2.56 VO 9 IS 2 YR 2006 UL http://ebn.bmj.com/content/9/2/56.abstract AB