TY  - RPRT
TI  - Perforated ulcer in the elderly.
AU  - M R Jacyna
AU  - A N Shepherd
PY  - 1985
DO  - 10.1016/s0140-6736(85)91595-8
UR  - https://pubmed.ncbi.nlm.nih.gov/2866375/
ID  - 2866375
ER  -