@misc{indiciaeaf061ce11eea,
  title = {Current cases \& concepts.},
  author = {G R Syvertsen and J R Haaga},
  year = {1979},
  doi = {10.1016/0149-936x(79)90055-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/262207/},
  note = {Source identifier: 262207}
}