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- Ulcer1
- United Kingdom1
- United States15
- United States Capitol (Washington, D.C.)2
- United States.1
- United States. Army. Medical Department.1
- United States. Navy Department. Medical Service Corps.1
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- Universities1
- Universities -- organization & administration1
- University of Louisiana. Medical Department.1
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- Urethral Diseases1
- Urethral Stricture -- surgery4
- Urinalysis1
- Urinary Bladder Calculi -- surgery3
- Urinary Bladder Diseases1
- Urologic Diseases1
- Urologic Surgical Procedures -- history1
- Urologic Surgical Procedures, Male1