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Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.
Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.