@misc{indiciaea6b4b03b032f,
  title = {The kidney in progressive systemic sclerosis: a prospective study.},
  author = {M T Kovalchik and S J Guggenheim and M H Silverman and J S Robertson and J C Steigerwald},
  year = {1978},
  doi = {10.7326/0003-4819-89-6-881},
  url = {https://pubmed.ncbi.nlm.nih.gov/717985/},
  note = {Source identifier: 717985}
}