| http://www.w3.org/ns/prov#value | - Moreover some factors, such as nutritional status or genetics, modulate the susceptibility of lungs to environmental pollutants [7,8].Although a significant number of publications have evaluated the association between exposure to current levels of NO2 indoors or the presence of gas appliances with respiratory health in children [1,9-11], their results are heterogeneous and limited.
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