@misc{indiciae753451626592,
  title = {[Unsolved problems of peptic ulcer].},
  author = {N V El'shteĭn and Iu Ia Kheĭnla and U B Mardna and E R Lond},
  year = {1989},
  url = {https://pubmed.ncbi.nlm.nih.gov/2666734/},
  note = {Source identifier: 2666734}
}