Essential trace elements in amyotrophic lateral sclerosis (ALS): Results in a population of a risk area of Italy

1. Forte, G.
2. Bocca, B.
3. Oggiano, R.
4. Clemente, S.
5. Asara, Y.
6. Sotgiu, M.A.
7. Farace, C.
8. Montella, A.
9. Fois, A.G.
10. Malaguarnera, M.
11. Pirina, P.
12. Madeddu, R.