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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
The FDA recognizes 118 routes of administration.
The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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