TY - STAND AU - T. McKeever AU - S. Lewis AU - C. Smith AU - J. Collins AU - H. Heatlie AU - M. Frischer AU - R. Hubbard BT - Thorax M1 - 10 PY - 2001 SP - 758 EP - 62 T2 - Thorax TI - Siblings, multiple births, and the incidence of allergic disease: a birth cohort study using the West Midlands general practice research database VL - 56 SN - 0040-6376 (Print) 0040-6376 ER -