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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
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The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.
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According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.