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Asthma cases in Americans are about 75% higher today than they were in 1980.
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The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.