| predictors of group 5 grass-pollen allergens in settled house dust: comparison between pollination and nonpollination seasons. | some sensitive pollen-allergic patients may experience perennial symptoms, and for these patients it is vitally important to know the concentration of grass-pollen allergens in their homes. the main objective of this study was to detect predictors associated with high grass allergen concentration in settled house dust during and outside the grass pollination season. | 2001 | 11703223 |