Immunity coverage against measles, rubella and parotiditis viruses in a juvenile population in Leon, Spain

1. Suárez, J.
2. Castañeda, M.R.
3. Gutiérrez, C.B.
4. Rodríguez Barbosa, J.I.
5. Tascón, R.I.
6. Rodríguez Ferri, E.F.