Comment on

• Early exposure to house-dust mite and cat allergens and development of childhood asthma: a cohort study. Multicentre Allergy Study Group.

  Lau S, Illi S, Sommerfeld C, Niggemann B, Bergmann R, von Mutius E, Wahn U. Lau S, et al. Lancet. 2000 Oct 21;356(9239):1392-7. doi: 10.1016/s0140-6736(00)02842-7. Lancet. 2000. PMID: 11052581
• Effects of early-life exposure to allergens and bacteria on recurrent wheeze and atopy in urban children.

  Lynch SV, Wood RA, Boushey H, Bacharier LB, Bloomberg GR, Kattan M, O'Connor GT, Sandel MT, Calatroni A, Matsui E, Johnson CC, Lynn H, Visness CM, Jaffee KF, Gergen PJ, Gold DR, Wright RJ, Fujimura K, Rauch M, Busse WW, Gern JE. Lynch SV, et al. J Allergy Clin Immunol. 2014 Sep;134(3):593-601.e12. doi: 10.1016/j.jaci.2014.04.018. Epub 2014 Jun 4. J Allergy Clin Immunol. 2014. PMID: 24908147 Free PMC article.