title: COPD and chronic bronchitis risk of indoor air pollution from solid fuel: a systematic review and meta-analysis.
authors.affiliation: Institute of Occupational and Environmental Medicine, School of Population and Health Sciences, University of Birmingham, Birmingham B15 2TT, UK. o.kurmi@bham.ac.uk
authors.forename: Om P
authors.initials: OP
authors.lastname: Kurmi
authors.forename: Sean
authors.initials: S
authors.lastname: Semple
authors.forename: Padam
authors.initials: P
authors.lastname: Simkhada
authors.forename: W Cairns S
authors.initials: WC
authors.lastname: Smith
authors.forename: Jon G
authors.initials: JG
authors.lastname: Ayres