@misc{indiciae46da52dd4e3e, title = {Current usage of nonionic contrast.}, author = {K D Hopper and H Lambe and Y L Matthews}, year = {1992}, doi = {10.1007/bf02926935}, url = {https://pubmed.ncbi.nlm.nih.gov/1290217/}, note = {Source identifier: 1290217} }