@misc{indiciae1cde567763e3,
  title = {[Crohn's disease. Classification. Etiological orientation].},
  author = {P Hecketsweiler and P Bernades},
  year = {1977},
  url = {https://pubmed.ncbi.nlm.nih.gov/601464/},
  note = {Source identifier: 601464}
}