Source: Eur Respir J, 55 (3) 2000138; 10.1183/13993003.00138-2020
Disease area: Airway diseases



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Samy Suissa, Pierre Ernst. Avoiding immortal time bias in observational studies. Eur Respir J, 55 (3) 2000138; 10.1183/13993003.00138-2020

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