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Subjects
- African Americans1
- Chicago (Ill.). Commission on Human Relations1
- Gastroenterology1
- Gastroscopy1
- Metropolitan Life Insurance Company, New York1
- Michael Reese Hospital1
- Military Medicine1
- Military Personnel1
- National Medical Association (U.S.)1
- Public Health2
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- Statistics1
- Substance-Related Disorders1
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- United States. Army1