@misc{indiciaecc3ad2830931,
  title = {Letter: M.C.Q.s.},
  author = {J B Harman},
  year = {1973},
  doi = {10.1016/s0140-6736(73)91059-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/4126495/},
  note = {Source identifier: 4126495}
}