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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").