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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
It is difficult to obtain enough calcium without consuming milk or other dairy foods.
There are 20 feet of blood vessels in each square inch of human skin.
Asthma cases in Americans are about 75% higher today than they were in 1980.
Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
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