Systemic antibiotic prophylaxis: determinants of effectiveness.
D000900:Anti-Bacterial Agents / Q000627:therapeutic use*; D006801:Humans; D008795:Metronidazole / Q000627:therapeutic use; D011292:Premedication; D013530:Surgical Wound Infection / Q000517:prevention & control*
D000900:Anti-Bacterial Agents; D008795:Metronidazole