Occult pneumonia in infants with high fever without source: A prospective multicenter study

1. Mintegi, S.
2. Benito, J.
3. Pijoan, J.I.
4. Marañon, R.
5. Peñalba, A.
6. Gonzalez, A.
7. Muñoz, G.
8. Luaces, C.
9. Claret, G.