RT Journal Article SR Electronic T1 Acute Tracheo-bronchitis JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 36 OP 42 DO 10.1136/thx.7.1.36 VO 7 IS 1 A1 V. E. Negus YR 1952 UL http://thorax.bmj.com/content/7/1/36.abstract AB