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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.
According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.
The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
The longest a person has survived after a heart transplant is 24 years.
After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.