Crack the heart code

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Across
  1. 4. Organ that pumps blood around the body
  2. 5. Condition where blood pressure is high
  3. 7. Medical speciality dealing with the heart
Down
  1. 1. Disease caused by high blood sugar
  2. 2. Device doctors use to listen to the heart
  3. 3. Commonest symptom of ha eart attack
  4. 6. Most common habit associated with heart attack