F A Hoffer

The compound renal pyramid. A normal hypoechoic region on the pediatric sonogram.

F. Hoffer, R. Teele, R. Lebowitz, 1987, Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine.

Cortical echogenicity in the hemolytic uremic syndrome: clinical correlation.

E. Grant, P. Choyke, L. Tina, 1988, Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine.