Low frequency of codon 463 mutation in the katG gene in Mycobacterium tuberculosis strains from Sao Paulo state - Cardoso, R. F.; Mamizuka, Elsa Masae; Hirata, Rosario Dominguez Crespo; Nakamura, Daisy Sato; Barco, P.; Cecon, Letícia; Leite, Clarice Queico Fujimura; Forestiero, Francisco José; Hirata, Mario Hiroyuki (Congresso Brasileiro de Microbiologia, 2001)