Verhoeff, A.P.

house dampness study house dust mites home dampness children number allergen symptom house dust floor fungi concentration exposure sampling odds ratios result ratio control bedroom relation presence der p i mattress species mattress dust sample propagule asthma association allergy method sensitization cough table level chapter floor dust mould health difference period growth sampler analysis humidity characteristic allergen avoidance measures measure wheeze prevalence comparison relationship measurement dust mites crude odds ratios cfu /g dust group correlation brunekreef combination effect dg 18 agar coefficient occupant factor particle information health effects parent asthmatic environment house dust mite air sampling platts-mill questionnaire variable case-control study netherland variation