title: [Reply to authors].
authors.affiliation: Servicio Anestesia y Reanimación, Complejo Hospitalario de Navarra, Pamplona, Navarra, España. Electronic address: abilbaoa@navarra.es.
authors.forename: A
authors.initials: A
authors.lastname: Bilbao Ares
authors.affiliation: Servicio Anestesia y Reanimación, Complejo Hospitalario de Navarra, Pamplona, Navarra, España.
authors.forename: M
authors.initials: M
authors.lastname: Castañeda Pascual
mesh_terms: D006801:Humans; D009407:Nerve Block