@misc{indiciaeea491a93ac1a,
  title = {An unusual cause for constipation.},
  author = {Martin Grassberger and Sandra Coester and Klemens Köhler},
  year = {2005},
  doi = {10.1007/s00508-005-0347-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/15926616/},
  note = {Source identifier: 15926616}
}