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- Medicine20
- United States12
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- Materia Medica10
- Philadelphia7
- Constitution and Bylaws5
- New York4
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- Public Health4
- Societies, Medical -- organization & administration4
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- Physiological Phenomena3
- Sanitary Engineering3
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- Societies, Medical3
- Syphilis3
- Therapeutics3
- University of Pennsylvania. Hospital.3