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Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

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Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

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No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

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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 National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

The Internet's underwater cables The Internet's underwater cables
The recent mass upheavals in Tunisia, Egypt, Libya, Yemen, and Syria gave political scientists a cha The recent mass upheavals in Tunisia, Egypt, Libya, Yemen, and Syria gave political scientists a cha
The “Flat Head” (Chinook) Indians acquired their name through shaping in infancy, as shown in a diag The “Flat Head” (Chinook) Indians acquired their name through shaping in infancy, as shown in a diag
Example of an online employment application and posting of a résumé. Example of an online employment application and posting of a résumé.
An Internet connection is usually needed to perform updates although some vehicle manufacturers use ... An Internet connection is usually needed to perform updates although some vehicle manufacturers use ...
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