Association between pre-existing respiratory disease and its treatment, and severe COVID-19: a population cohort study

Aveyard, P; Gao, M; Lindson, N; Hartmann-Boyce, J; Watkinson, P; Young, D; Coupland, CAC; San Tan, P; Clift, AK; Harrison, D; Gould, DW; Pavord, ID; Hippisley-Cox, J

Aveyard, P (corresponding author), Univ Oxford, Nuffield Dept Primary Care Hlth Sci, Oxford OX2 6GG, England.

LANCET RESPIRATORY MEDICINE, 2021; 9 (8): 909

Abstract

Background Previous studies suggested that the prevalence of chronic respiratory disease in patients hospitalised with COVID-19 was lower than its pre......

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