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Did you know?
The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.
Did you know?
People about to have surgery must tell their health care providers about all supplements they take.
Did you know?
Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
Did you know?
In 1864, the first barbiturate (barbituric acid) was synthesized.
Did you know?
The horizontal fraction bar was introduced by the Arabs.