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- United States15
- United States.3
- United States. Army. General Hospital No. 36.1
- United States. Department of Health and Human Services1
- United States. Public Health Service.1
- Universities4
- Universities -- organization & administration1
- University of Michigan.6
- University of Michigan. Department of Medicine and Surgery1
- University of Michigan. Department of Medicine and Surgery.4
- University of Michigan. Homoeopathic Medical College.1