Associations of wheezing phenotypes in the first 6 years of life with atopy, lung function and airway responsiveness in mid-childhood
J Henderson, R Granell, J Heron, A Sherriff, A Simpson, A Woodcock, D P Strachan, S O Shaheen, J A C Sterne
Thorax Nov 2008, 63 (11) 974-980; DOI: 10.1136/thx.2007.093187