@misc{indiciaec394246d2f51,
  title = {A probable mutation within the MN blood group system.},
  author = {K HENNINGSEN and T JACOBSEN},
  year = {1954},
  doi = {10.1111/j.1699-0463.1954.tb00866.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/13197044/},
  note = {Source identifier: 13197044}
}