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- United States[remove]5
- Abdominal Cavity -- surgery1
- Canada1
- Censuses1
- Criminals -- statistics & numerical data1
- Disabled Persons -- statistics & numerical data1
- Equipment and Supplies1
- Hysterectomy, Vaginal1
- Military Medicine1
- Ovariectomy1
- United States. Army. Medical Department.1
- Water Supply -- statistics & numerical data1