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Subjects
- Ulcer -- diagnosis1
- Umbilical Cord -- surgery1
- United States14
- United States. Army.1
- United States. Army. Hospital Corps.1
- United States. Marine Hospital Service.1
- University of Pennsylvania. Hospital.1
- University of Texas. Medical Branch.1
- Unnecessary Procedures1
- Urethra -- surgery1
- Urinalysis2
- Urinalysis -- methods1
- Urinary Bladder -- pathology1
- Urinary Bladder -- surgery1
- Urinary Bladder Calculi -- surgery1
- Urinary Bladder Diseases1
- Urinary Bladder Diseases -- surgery1
- Urinary Retention -- etiology1
- Urine1
- Urogenital Abnormalities1