Columbia subject headings:
Generative organs, Male--Diseases.
Genitourinary organs--Diseases.
Kidneys--Diseases.
Medical instruments and apparatus.
Harvard subject headings:
Generative organs, Male--Diseases--Diagnosis.
Generative organs, Male--Diseases.
Genitourinary organs--Diseases--Diagnosis.
Genitourinary organs--Diseases.
Kidneys--Diseases--Diagnosis
Medical instruments and apparatus
Princeton subject headings: