CRAAP

CRAAP:
Currency: Above given data was posted or distributed on 2017. This data has been present or refreshed.
Relevancy: Above data is totally right and identified with my subject and I would be open to referring to this source in my exploration task.
Authority: Above given data writer is Anderson B who is fit the bill for composed this source. This data keep going refreshed on 30 April 2018.
Accuracy: Above given data upheld by prove. In this source spelling and sentence structure are right or precise.
Purpose: Above given source provide knowledge about COPD and instruct to us how to avert COPD. Author intension is clear about this data.

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