| Effective (percentage) |
Ceftriaxone-metronidazole Ceftriaxone-ciprofloxacin Ceftriaxone-gentamycin Ceftriaxone-metronidazole-gentamycin Ceftriaxone-metronidazole-ciprofloxacin Total | 11 (35.5%) 1 (3.2%) 1 (3.2%) 16 (51.6%) 2 (6.5%) 31 (100.0%) |