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The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

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Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

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Drug-induced pharmacodynamic effects manifested in older adults include drug-induced renal toxicity, which can be a major factor when these adults are experiencing other kidney problems.

Color-enhanced X-ray of the colon taken during a barium enema. Color-enhanced X-ray of the colon taken during a barium enema.
Color-enhanced scanning electron micrograph of HIV virus (red) infecting T-helper cells (green). Color-enhanced scanning electron micrograph of HIV virus (red) infecting T-helper cells (green).
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Research Methods Research Methods
Research Methods Research Methods
Comparison of Scheduling Methods Comparison of Scheduling Methods
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