@misc{indiciae425addc954c0,
  title = {Distinction between obstructive and nonobstructive pyelocaliectasis with duplex Doppler sonography.},
  author = {J F Platt and J M Rubin and J H Ellis},
  year = {1989},
  doi = {10.2214/ajr.153.5.997},
  url = {https://pubmed.ncbi.nlm.nih.gov/2679004/},
  note = {Source identifier: 2679004}
}