Episodic morbidity and mortality in relation to air pollution.
D000397:Air Pollution; D000704:Analysis of Variance; D004781:Environmental Exposure; D006801:Humans; D008131:London; D009017:Morbidity; D009026:Mortality; D009519:New York City; D012621:Seasons; D013223:Statistics as Topic; D013997:Time Factors; D014887:Weather