text: * Bacteroides spp., including B. fragilis
  * Enterobacter spp.
  * Escherichia coli
  * Haemophilus influenzae
  * Klebsiella species
  * Morganella morganii
  * Neisseria gonorrhoeae
  * Proteus mirabilis
  * Proteus vulgaris
  * Providencia rettgeri
  * Pseudomonas spp., including P. aeruginosa
  * Serratia marcescens