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

Publication date: Available online 1 April 2021Source: The Lancet Respiratory MedicineAuthor(s): Paul Aveyard, Min Gao, Nicola Lindson, Jamie Hartmann-Boyce, Peter Watkinson, Duncan Young, Carol A C Coupland, Pui San Tan, Ashley K Clift, David Harrison, Doug W Gould, Ian D Pavord, Julia Hippisley-Cox
Source: The Lancet Respiratory Medicine - Category: Respiratory Medicine Source Type: research