John R. Saltzman, MD
Saltzman JR. Vitamin and trace-element supplementation in healthy elderly persons reduced the frequency of infection and nutritional deficiencies and improved immune response. ACP J Club. 1993;118:34. doi: 10.7326/ACPJC-1993-118-2-034
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Published: ACP J Club 1993;118(2):34.
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