No abstract available
Publication types
- Letter
- Research Support, N.I.H., Extramural
- Research Support, U.S. Gov't, Non-P.H.S.
MeSH terms
- Databases, Factual
- Dietary Supplements
- Drug Labeling / methods*
- Drug Labeling / standards*
- National Institutes of Health (U.S.)
- United States
- Vitamin A*
- beta Carotene*