@misc{indiciae23dec129c008,
  title = {The apple core sign.},
  author = {J Freyschmidt},
  year = {2001},
  doi = {10.1007/s00330-001-1193-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/11868104/},
  note = {Source identifier: 11868104}
}