Laboratory-based, 2-year surveillance of pediatric parapneumonic pneumococcal empyema following heptavalent pneumococcal conjugate vaccine universal vaccination in madrid

1. Picazo, J.
2. Ruiz-Contreras, J.
3. Casado-Flores, J.
4. Negreira, S.
5. Del Castillo, F.
6. Hernández-Sampelayo, T.
7. Bueno, M.
8. Calvo, C.
9. Ríos, E.
10. Méndez, C.