TY  - RPRT
TI  - [Ulcerative colitis--epidemiological data and manifestations].
AU  - E Ruzyllo
AU  - W Bartnik
AU  - Z Bakowska
PY  - 1972
UR  - https://pubmed.ncbi.nlm.nih.gov/4643099/
ID  - 4643099
ER  -