@misc{10287, author = {T. McKeever and S. Lewis and C. Smith and J. Collins and H. Heatlie and M. Frischer and R. Hubbard}, title = {Siblings, multiple births, and the incidence of allergic disease: a birth cohort study using the West Midlands general practice research database}, year = {2001}, journal = {Thorax}, volume = {56}, number = {10}, pages = {758-62}, issn = {0040-6376 (Print) 0040-6376}, }