RT Journal Article SR Electronic T1 Outcomes in children treated for persistent bacterial bronchitis JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 922 OP 923 VO 62 IS 10 A1 Catherine Byrnes A1 Elizabeth Edwards YR 2007 UL http://thorax.bmj.com/content/62/10/922.abstract AB