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Post-Traumatic Stress Disorder or PTSD is caused by a frightening event, either witnessed or experienced. Signs of the disorder may include depression, bad dreams and severe nervousness. Thoughts about the…
From VOA Learning English, this is the Health & Lifestyle report. Scientists in Australia say they have developed the world’s first blood test to find a deadly skin cancer in…
A new blood test can tell doctors whether a person has suffered a concussion up to a week after he or she was injured. A study describing the test was…