@misc{indiciae287f11186d96,
  title = {The open-ring sign.},
  author = {Ata Siddiqui and Anupam Sahni and Satish Khadilkar},
  year = {2005},
  doi = {10.4103/0028-3886.16439},
  url = {https://pubmed.ncbi.nlm.nih.gov/16010086/},
  note = {Source identifier: 16010086}
}