TY  - RPRT
TI  - Cigarette smoking and ulcerative colitis.
AU  - H Jick
AU  - A M Walker
PY  - 1983
DO  - 10.1056/nejm198302033080507
UR  - https://pubmed.ncbi.nlm.nih.gov/6848937/
ID  - 6848937
ER  -