@misc{indiciaec222d3e87740,
  title = {[Elective surgery in ulcerative colitis].},
  author = {J M Valoria villamartin and C Moreno gonzalez-bueno},
  year = {1976},
  url = {https://pubmed.ncbi.nlm.nih.gov/981766/},
  note = {Source identifier: 981766}
}