Multidrug resistant Mycobacterium tuberculosis: a retrospective katG and rpoB mutation profile analysis in isolates from a reference center in Brazil. oleh Flávia A D de Freitas, Vagner Bernardo, Michel K Gomgnimbou, Christophe Sola, Hélio R Siqueira, Márcia A S Pereira, Fátima C O Fandinho, Harrison M Gomes, Marcelo E I Araújo, Philip N Suffys, Elizabeth A Marques, Rodolpho M Albano