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Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.
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Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.