U Will

Endosonographic elastography in the diagnosis of mediastinal lymph nodes.

J Janssen, J. Janssen, L. Greiner, 2007, Endoscopy.

Contrast-enhanced ultrasound for the characterization of focal liver lesions--diagnostic accuracy in clinical practice (DEGUM multicenter trial).

D Becker, M. Friedrich-Rust, C. Dietrich, 2008, Ultraschall in der Medizin.