Endoscopic ultrasound.
Edmonson
J M
JM
Dittrick Museum of Medical History, Case Western Reserve University, USA.
D020776:Endoscopes, Gastrointestinal / Q000266:history; D019160:Endosonography / Q000266:history* / Q000295:instrumentation; D049673:History, 20th Century; D006801:Humans