RT Journal Article
SR Electronic
T1 Prevalence of asthma among 12 year old children in New Zealand and South Wales: a comparative survey
JF Thorax
JO Thorax
FD BMJ Publishing Group Ltd and British Thoracic Society
SP 688
OP 688
DO 10.1136/thx.46.9.688-f
VO 46
IS 9
YR 1991
UL http://thorax.bmj.com/content/46/9/688.7.abstract
AB