TY  - RPRT
TI  - Perforated duodenal ulcer.
AU  - J R Rees
AU  - K G Swan
AU  - B Thorbjarnarson
PY  - 1970
DO  - 10.1016/s0002-9610(70)80047-2
UR  - https://pubmed.ncbi.nlm.nih.gov/5488331/
ID  - 5488331
ER  -