title: [Is it necessary to add a fourth drug to the initial treatment of tuberculosis?].
authors: L
authors: L
authors: Torres
authors: J B
authors: JB
authors: Pérez
authors: M A
authors: MA
authors: Lezcano
authors: M J
authors: MJ
authors: Revillo
mesh_terms: D000995:Antitubercular Agents / Q000008:administration & dosage*; D006801:Humans; D013030:Spain; D018088:Tuberculosis, Multidrug-Resistant / Q000188:drug therapy*
chemical_list: D000995:Antitubercular Agents