When can it be useful to look for occult HBV in haemodialysis patients? Rosa María Ruiz-Calero Cendrero; Bárbara Cancho Castellano; María Victoria Martín Hidalgo-Barquero; María Cruz Cid Parra; Josefa Galán González; María Antonia Fernández Solís; Olga Sánchez García;

New aspects in epidemiological surveillance in relation to viral diseases in haemodialysis Bárbara Cancho Castellano; Rosa María Ruiz-Calero Cendrero; María Victoria Martín Hidalgo-Barquero; Rosa Díaz Campillejo; Cristina López Arnaldo; Nicolás Roberto Robles Pérez-Monteoliva;