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More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.
People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
Your heart beats over 36 million times a year.
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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