Amount of smoking, duration of smoking cessation and their interaction with silica exposure in the risk of rheumatoid arthritis among males: results from the Swedish Epidemiological Investigation of Rheumatoid Arthritis (EIRA) study

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BMJ PUBLISHING GROUP

1. Swedish Research Council for Health, Working Life and Welfare
2. Swedish Foundation for Strategic Research
3. COMBINE public-private research programme
4. Swedish Research Council
5. EU-IMI BTCure