@misc{indiciae0d466dd1586e,
  title = {IgG subclass deficiency.},
  author = {S O'Keeffe and P Finnegan},
  year = {1993},
  doi = {10.1378/chest.104.6.1940},
  url = {https://pubmed.ncbi.nlm.nih.gov/8253003/},
  note = {Source identifier: 8253003}
}