[Diagnostic difficulties in a case of double gastric ulcer].

@article{Polak1976DiagnosticDI,
  title={[Diagnostic difficulties in a case of double gastric ulcer].},
  author={L L Polak and O Bader and Zygmunt Grzebieniak},
  journal={Wiadomosci lekarskie},
  year={1976},
  volume={29 7},
  pages={631-4}
}