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There are approximately 3 million unintended pregnancies in the United States each year.
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For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.
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According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.
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The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.
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During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).
The continents were not always in their present positions. The position of the continents is importa
Figure 7.1 shows the rapid decline in the trust of Americans in government since the 1960s. This de
Instructions for Completing the CMS-1500 (02/12) Claim Form Continued
Instructions for Completing the CMS-1500 (02/12) Claim Form Continued
Hydrolysis reactions for some biochemically important phosphate compounds (part 2)
Climate change is an important vector for human diseases