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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.
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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.