Prevalence of hepatitis A in an institution for the mentally retarded in an intermediate endemicity area: Influence of age length of institutionalizatian

1. Gil, A.
2. González, A.
3. Dal-Ré, R.
4. Dominguez, V.
5. Ortega, P.
6. Barrio, J.L.
7. Aguilar, L.