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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
Approximately 500,000 babies are born each year in the United States to teenage mothers.
There are 60,000 miles of blood vessels in every adult human.
Women are 50% to 75% more likely than men to experience an adverse drug reaction.
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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