tabac (1) tabagisme (1) consommation (1) adulte (1) Methods (1) Inflammatory bowel diseases (1) Ulcerative colitis (1) Tobacco (1) Swiss (1) Smoking (1) Patients (1) Gastroenterology (1) Crohn's disease (1) Determinants (1) Methods (1) Patients (1) Logistic regression analysis (1) cohorte (1) adulte (1)