How do you check for normal ECG?

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  2. #simple
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  4. #along
  5. #piece
  6. #determine
  7. #waves
  8. #rhythm
  9. #analysis
  10. #approach
  11. #pencil
  12. #paper
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  14. #regular
  15. #irregular
  16. #track
  17. #whether
  18. #first
  19. #complexes