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Vaccines prevent between 2.5 and 4 million deaths every year.

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By definition, when a medication is administered intravenously, its bioavailability is 100%.

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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

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To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

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The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

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Video: Sigmoidoscopy

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