Human immunodeficiency virus type 1 serotypes in Madrid, Spain

1. Soriano, V.
2. Dietrich, U.
3. Mas, A.
4. Andersen, R.
5. Bravo, R.
6. Ruppach, H.
7. Gutiérrez, M.
8. Martínez-Zapico, R.
9. Rübsamen-Waigmann, H.
10. González-Lahoz, J.