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Tobacco smoke and Chronic Bronchitis Quiz App & e-Book Download - 401

MCQ:

Breathlessness becomes difficult when damage to the lungs is

  1. below 20%
  2. 20%-30%
  3. 30% - 40%
  4. 50% and above

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Tobacco smoke and Chronic Bronchitis Learning App: Free Download (Android & iOS)

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Tobacco smoke and Chronic Bronchitis App (Android & iOS)

Tobacco smoke and Chronic Bronchitis App (Android & iOS)

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A level Biology App (iOS & Android)

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