Genotypic and phenotypic characterization of Staphylococcus aureus isolates from the respiratory tract in mechanically-ventilated patients by Lacoma, A, Laabei, M, Sánchez-Herrero, JF, Young, B, Godoy-Tena, G, Gomes-Fernandes, M, Sumoy, L, Plans, O, Arméstar, F, Prat, C