@misc{indiciaea72a2f1210aa,
  title = {Properdin--its biologic importance.},
  author = {C A Alper},
  year = {1973},
  doi = {10.1056/nejm197301112880227},
  url = {https://pubmed.ncbi.nlm.nih.gov/4681974/},
  note = {Source identifier: 4681974}
}