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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.
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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.