@misc{indiciaeb109936d0948,
  title = {Echocardiographic patterns in scleroderma.},
  author = {R F Eggebrecht and R E Kleiger},
  year = {1977},
  doi = {10.1378/chest.71.1.47},
  url = {https://pubmed.ncbi.nlm.nih.gov/137103/},
  note = {Source identifier: 137103}
}