RT Journal Article SR Electronic T1 Gender differences in airway behaviour over the human life span JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 1119 OP 1138 DO 10.1136/thx.54.12.1119 VO 54 IS 12 A1 Becklake, Margaret R A1 Kauffmann, Francine YR 1999 UL http://thorax.bmj.com/content/54/12/1119.abstract AB