TY  - RPRT
TI  - Perforated duodenal ulcers.
AU  - A L Blower
AU  - C P Armstrong
PY  - 1987
DO  - 10.1002/bjs.1800740843
UR  - https://pubmed.ncbi.nlm.nih.gov/3651789/
ID  - 3651789
ER  -