Non-perinatal listeriosis: Changes in frequency, clinical spectrum and prognostic factors Luis Corral; Ignacio de los Santos; Carmen Quereda; Fernando Acebrón; Patricia Ruíz-Garbajosa; Alfonso Muriel; Íñigo Corral;

Effect of subinhibitory concentrations of ampicillin on Listeria monocytogenes Ángel Rodríguez-Villodres; José Antonio Lepe; Jesús Blázquez; Javier Aznar;