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Subjects
- U.S. Marine Hospital, San Francisco.1
- UNICEF.1
- USSR70
- Uganda9
- Ukraine3
- Ulcer1
- Ultraviolet Rays -- adverse effects3
- Ultraviolet Therapy1
- Umbilical Cord -- surgery1
- Union Pacific Railroad Company.2
- Unione infermiere San Camillo.3
- United Kingdom80
- United Nations1
- United Nations.1
- United States296
- United States Air Force String Orchestra.1
- United States Dept. of Health and Human Services1
- United States Government Agencies4
- United States Public Health Service2
- United States-Japan Cooperative Medical Science Program.1