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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.
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Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.