@misc{indiciae509aa597026c,
  title = {Subcutaneous rheumatoid nodules.},
  author = {W J Mastboom and F H van der Staak and C Festen and M H Postma},
  year = {1988},
  doi = {10.1136/adc.63.6.662},
  url = {https://pubmed.ncbi.nlm.nih.gov/3389901/},
  note = {Source identifier: 3389901}
}