How many seconds is each box on ECG?

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Tags

  1. #ordinarily
  2. #intervals
  3. #second
  4. #include
  5. #corresponds
  6. #boxes
  7. #small
  8. #paper
  9. #forming
  10. #heavier
  11. #result
  12. #lines
  13. #hence
  14. #larger
  15. #horizontal
  16. #speed
  17. #represent