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2. Use of tomography and ultrasound in the diagnosis of nonopaque renal calculi;Brennan;J. Am. Med. Assoc.,1980
3. Gray-scale ultrasonic demonstration of nephrocalcinosis;Cacciarelli;Radiology,1978
4. Ultrasonic evaluation of renal calculi;Edell;Am. J. Roentgenol.,1978
5. Lymphomatous involvement of the kidneys: Computed tomography and ultrasound demonstration;Falappa;Diagn. Imaging,1980