@misc{indiciae7764d84bd335,
  title = {Gray-scale sonography and the IUD.},
  author = {J Van Eyck and P Defoort and M Thiery},
  year = {1976},
  doi = {10.1016/s0010-7824(76)80034-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/1253600/},
  note = {Source identifier: 1253600}
}