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The Hashemite Kingdom of Jordan is a small country in the Middle East (89,342 sq. km) with a population of only about 4.8 million (1998). Exposure to air pollution aggravates respiratory diseases. Kuo, Lai, Lee, Tai, and Lee (2002) found a positive relationship between prevalence of asthma diagnosed by lung function test and air pollution. In the current study lower respiratory tract symptoms were prevalent more than upper respiratory tract symptoms. No study was found to distinguish the prevalence rates of respiratory symptoms in this manner.
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