Research
Concomitant diagnosis of asthma and COPD: a quantitative study in UK primary care
Francis Nissen, Daniel R Morales, Hana Mullerova, Liam Smeeth, Ian J Douglas and Jennifer K Quint
British Journal of General Practice 2018; 68 (676): e775-e782. DOI: https://doi.org/10.3399/bjgp18X699389