TY  - RPRT
TI  - [Ulcerative colitis. Chronic active course].
AU  - A U Dignass
AU  - K Herrlinger
AU  - J Schölmerich
PY  - 2004
DO  - 10.1055/s-2004-813495
UR  - https://pubmed.ncbi.nlm.nih.gov/15455274/
ID  - 15455274
ER  -