@misc{indiciaebf4761863cd6,
  title = {Polymorphism of the third component of human complement (C3).},
  author = {C Rittner},
  year = {1973},
  doi = {10.1007/bf00291491},
  url = {https://pubmed.ncbi.nlm.nih.gov/4720044/},
  note = {Source identifier: 4720044}
}