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Vaccines prevent between 2.5 and 4 million deaths every year.

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The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

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On average, the stomach produces 2 L of hydrochloric acid per day.

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Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.

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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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