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To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.
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Approximately 25% of all reported medication errors result from some kind of name confusion.
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Vaccines prevent between 2.5 and 4 million deaths every year.