Influence of smoking on folate intake and blood folate concentrations in a group of elderly spanish men

1. Ortega, R.M.
2. Lopez-Sobaler, A.M.
3. Gonzalez-Gross, M.M.
4. Redondo, R.M.
5. Marzana, I.
6. Zamora, M.J.
7. Andres, P.