@misc{indiciae390d55777913,
  title = {Null cells in leukaemia during therapy.},
  author = {J Ritter},
  year = {1976},
  doi = {10.1016/s0140-6736(76)91723-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/63032/},
  note = {Source identifier: 63032}
}