RT Journal Article SR Electronic T1 Dog ownership and contact during childhood and later allergy development JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society DO 10.1183/09031936.00092807 A1 C-M. Chen A1 M. Verena A1 W. Bischof A1 O. Herbarth A1 M. Borte A1 H. Behrendt A1 U. Krämer A1 A. von Berg A1 C.P. Bauer A1 S. Koletzko A1 H-E. Wichmann A1 J. Heinrich A1 the LISA Study Group and the GINI Study Group YR 2008 UL http://erj.ersjournals.com/content/early/2008/02/06/09031936.00092807.abstract AB