@misc{indiciae6c94dea4b48f,
  title = {Chorionic villus sampling and amniocentesis.},
  author = {N S Silverman and R J Wapner},
  year = {1990},
  url = {https://pubmed.ncbi.nlm.nih.gov/2102323/},
  note = {Source identifier: 2102323}
}