@misc{indiciae9591a0488d16, title = {Drip-infusion pyelography.}, author = {R O Danford and A J Davidson and R L Goldman}, year = {1969}, doi = {10.1056/nejm196905012801818}, url = {https://pubmed.ncbi.nlm.nih.gov/5777922/}, note = {Source identifier: 5777922} }