Childhood passive smoking and IBD risk

Smoking and IBD risk (Cohort US-Chicago)

Smoking and CD phenotype (Cases-controls, UK-Scotland)

Smoking and IBD risk

Smoking and IBD risk (case-control. Israel)

Smoking and UC risk (case-control. Australia)

In siblings with similar genetic susceptibility for inflammatory bowel disease, smokers tend to develop CD and non-smokers develop UC (UK)

Smoking and CD risk (case-control. Italy)

Smoking and IBD risk (case-control. Spain)

Smoking and IBD risk (case-control. Israel)