@misc{indiciae23c7813b5b62,
  title = {[Gastroduodenal association ulcer].},
  author = {J Lenz and W Hartel and C Kreckel and G Schuster},
  year = {1972},
  url = {https://pubmed.ncbi.nlm.nih.gov/4680613/},
  note = {Source identifier: 4680613}
}