%0 Journal Article
%T Ethnic differences in smoking intensity and COPD risk: an observational study in primary care
%A Alexander Gilkes
%A Mark Ashworth
%A Patrick White
%A Peter Schofield
%A Rohini Mathur
%A Sally Hull
%A Stevo Durbaba
%J Archive of "NPJ Primary Care Respiratory Medicine".
%D 2017
%R 10.1038/s41533-017-0052-8
%X Smoking history and COPD diagnosis in ethnic groups in London (n£¿=£¿1,000,388
%U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5583254/