@misc{indiciae87fa63e30b0a,
  title = {Azathioprine in connective tissue disorders.},
  author = {A J Richards and D R Swinson and E B Hamilton},
  year = {1972},
  doi = {10.1136/bmj.2.5810.405-a},
  url = {https://pubmed.ncbi.nlm.nih.gov/5023921/},
  note = {Source identifier: 5023921}
}