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Author Question: Because longitudinal studies may last 20 years or more, they run the risk of a. condition error. ... (Read 21 times) |
When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.
Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.