Schlagwörter
CROHNS-DISEASE
4
ULCERATIVE-COLITIS
4
5-AMINOSALICYLIC ACID
2
AMBIENT AIR-POLLUTION
2
AZATHIOPRINE
2
CLINICAL-COURSE
2
CONTROLLED-TRIAL
2
ENVIRONMENTAL-FACTORS
2
EVIDENCE-BASED CONSENSUS
2
FOLLOW-UP
2
Gastroenterology
2
General Medicine
2
INCEPTION COHORT
2
INFLAMMATORY-BOWEL-DISEASE
2
Inflammatory bowel disease
2
MANAGEMENT
2
MEDICAL-MANAGEMENT
2
NATURAL-HISTORY
2
POPULATION
2
TWINS
2
epidemiology
2
time trend
2