RT Journal Article SR Electronic T1 Addition of peak flow monitoring to symptom monitoring did not improve healthcare visits, quality of life, or lung function in older adults with moderate-to-severe asthma JF Evidence Based Nursing JO Evid Based Nurs FD BMJ Publishing Group Ltd and RCN Publishing Company Ltd SP 52 OP 52 DO 10.1136/ebn.10.2.52 VO 10 IS 2 YR 2007 UL http://ebn.bmj.com/content/10/2/52.abstract AB