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The familiar sounds of your heart are made by the heart's valves as they open and close.
Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.
The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
The average adult has about 21 square feet of skin.
After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
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