by disk diffusion antimicrobial susceptibility testing , 11 % of 313 consecutive strains of pseudomonas aeruginosa , examined during july to october 1973 , were resistant to gentamicin ( minimal inhibitory concentration 12.5 to > 100 mug/ml ) , and a further 31 % were moderately resistant ( 6.25 to 12.5 mug/ml ) to gentamicin at the university of alberta hospital in edmonton , canada .
C0001914
alberta
C0006823
canada