@misc{indiciae3a9ec4a367f2,
  title = {Polymorphism of the human complement component C4.},
  author = {R D Campbell and I Dunham and E Kendall and C A Sargent},
  year = {1990},
  url = {https://pubmed.ncbi.nlm.nih.gov/1971760/},
  note = {Source identifier: 1971760}
}