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The familiar sounds of your heart are made by the heart's valves as they open and close.
Illicit drug use costs the United States approximately $181 billion every year.
Medication errors are three times higher among children and infants than with adults.
There are more nerve cells in one human brain than there are stars in the Milky Way.
Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.