@misc{indiciaececa2d88162e,
  title = {[ABO incompatibility and abortion].},
  author = {H Krieg and C Kasper},
  year = {1967},
  doi = {10.1007/bf01547285},
  url = {https://pubmed.ncbi.nlm.nih.gov/4967551/},
  note = {Source identifier: 4967551}
}