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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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.
The horizontal fraction bar was introduced by the Arabs.
As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.
Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

