TY  - RPRT
TI  - A simple phantom for learning needle placement for sonographically guided biopsy.
AU  - B Silver
AU  - T S Metzger
AU  - T A Matalon
PY  - 1990
DO  - 10.2214/ajr.154.4.2107686
UR  - https://pubmed.ncbi.nlm.nih.gov/2107686/
ID  - 2107686
ER  -