The association was highly significant between MMEF <LLN and at least the presence of one of the three symptoms cough, sputum or dyspnoea (OR 3.19, 95% CI 2.22–4.58).
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The association was highly significant between MMEF <LLN and at least the presence of one of the three symptoms cough, sputum or dyspnoea (OR 3.19, 95% CI 2.22–4.58).