@misc{indiciae50f5c3bfda31, title = {EUS: an added test or a replacement for several?}, author = {P J Kelsey and A L Warshaw}, year = {1993}, doi = {10.1055/s-2007-1010280}, url = {https://pubmed.ncbi.nlm.nih.gov/8491137/}, note = {Source identifier: 8491137} }