[Is it necessary to add a fourth drug to the initial treatment of tuberculosis?].
Casabona
N M
NM
Caylà
J A
JA
D000995:Antitubercular Agents / Q000627:therapeutic use*; D006801:Humans; D013030:Spain; D018088:Tuberculosis, Multidrug-Resistant / Q000188:drug therapy*
D000995:Antitubercular Agents