@misc{indiciae38c83700fb8c,
  title = {Surgery after colectomy for ulcerative colitis.},
  author = {C E Leijonmarck and L Liljeqvist and B Poppen and G Hellers},
  year = {1992},
  doi = {10.1007/bf02049409},
  url = {https://pubmed.ncbi.nlm.nih.gov/1568402/},
  note = {Source identifier: 1568402}
}