@misc{indiciae03be8e75661e,
  title = {Descending venography: a method of evaluating lower extremity venous valvular function.},
  author = {R J Herman and H L Neiman and J S Yao and T J Egan and J J Bergan and S R Malave},
  year = {1980},
  doi = {10.1148/radiology.137.1.7422863},
  url = {https://pubmed.ncbi.nlm.nih.gov/7422863/},
  note = {Source identifier: 7422863}
}