The majority of cases of chronic bronchitis are caused by ______________

Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

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Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

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People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

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Booker T. Washington in his office at Tuskegee Institute, 1900. Washington chose a policy of accommo

A thermostat stuck in the open position caused the engine to operate too cold. The vehicle failed ...

Erosion of palatal surfaces of maxillary teeth due to chronic vomiting.

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Author Question: The majority of cases of chronic bronchitis are caused by _______________. (Read 16 times)

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