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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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.