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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
The horizontal fraction bar was introduced by the Arabs.
After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.
Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.