ORIGINAL RESEARCH
Opposite Trends of Allergic Disorders
and Respiratory Symptoms in Children
over a Period of Large-Scale Ambient Air
Pollution Decline
Grzegorz M. Brożek, Jan E. Zejda, Małgorzata Kowalska, Mateusz Gębuś,
Krzysztof Kępa, Michał Igielski
Pol. J. Environ. Stud. 2010;19(6):1133-1138