RT Journal Article SR Electronic T1 Wheeze, asthma diagnosis and medication use in developing countries JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 885 OP 887 DO 10.1136/thx.2004.035980 VO 60 IS 11 A1 M R Becklake YR 2005 UL http://thorax.bmj.com/content/60/11/885.1.abstract AB