title: Two authors reply.
authors: Murray A
authors: MA
authors: Mittleman
authors: Elizabeth
authors: E
authors: Mostofsky
mesh_terms: D000393:Air Pollutants / Q000009:adverse effects*; D000397:Air Pollution / Q000009:adverse effects*; D004781:Environmental Exposure / Q000009:adverse effects*; D015340:Epidemiologic Research Design; D005260:Female; D006801:Humans; D008297:Male; D052638:Particulate Matter / Q000009:adverse effects*; D020521:Stroke / Q000209:etiology*
chemical_list: D000393:Air Pollutants; D052638:Particulate Matter