Tufts researchers and colleagues report that place of birth plays a role in the occurrence of asthma in a United States black population. The researchers found that within one inner-city population, blacks born in the United States were more likely to have asthma than blacks who were born outside of the United States. "Within Asian and Hispanic populations, there is research that indicates that asthma varies between those who are born in the U.S. and those who are foreign-born.
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