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Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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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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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.