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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

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The average office desk has 400 times more bacteria on it than a toilet.

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Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

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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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Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

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