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Medication errors are more common among seriously ill patients than with those with minor conditions.
The familiar sounds of your heart are made by the heart's valves as they open and close.
Asthma cases in Americans are about 75% higher today than they were in 1980.
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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