High rates of resistance to cephalosporins among viridans-group streptococci causing bacteraemia in neutropenic cancer patients. - Marron, Anna; Carratalà, Jordi; Alcaide, Fernando; Fernández-Sevilla, Alberto; Gudiol, Francesc; Marron, A; Carratalà, J; Alcaide, F; Fernández-Sevilla, A; Gudiol, F (Journal of Antimicrobial Chemotherapy (JAC), 2001)