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- United Kingdom4
- United States[remove]212
- United States Government Agencies1
- United States Military Academy.2
- United States. Army1
- United States. Army.3
- United States. Army. Medical Department.1
- United States. Navy Department Bureau of Medicine and Surgery.1
- United States. Navy.5
- United States. Navy. Medical Department1
- United States. War Department1
- Universities2
- Urinary Calculi1