@misc{indiciaeed1410529a05,
  title = {The course.},
  author = {G F Abercrombie},
  year = {1969},
  doi = {10.1016/s0140-6736(69)90829-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/4187997/},
  note = {Source identifier: 4187997}
}