TY  - RPRT
TI  - [DRG exercises: perforated duodenal ulcer, peritonitis].
AU  - R Bartkowski
AU  - B Endrich
AU  - M Siess
PY  - 2002
UR  - https://pubmed.ncbi.nlm.nih.gov/12599310/
ID  - 12599310
ER  -