TY  - RPRT
TI  - Progress in endoscopic ultrasonography.
AU  - C J Lightdale
PY  - 1996
DO  - 10.1016/s0016-5107(96)70270-5
UR  - https://pubmed.ncbi.nlm.nih.gov/8903828/
ID  - 8903828
ER  -