@misc{indiciae16e19aa52e25,
  title = {[Obstetrical ultrasonography].},
  author = {Alexander Strauss and Susanne Müller-Egloff and Ivo Markus Heer},
  year = {2002},
  doi = {10.1159/000063415},
  url = {https://pubmed.ncbi.nlm.nih.gov/12077500/},
  note = {Source identifier: 12077500}
}