LAMFEL, R. Early online: A randomised trial comparing preoperative administration of single-dose kefazolin to kefazolin plus metronidazole as prophylactic antibiotics at caesarean section. South African Medical Journal, South Africa, v. 114, n. 5, 2024. DOI: 10.7196/. Disponível em: https://samajournals.co.za/index.php/samj/article/view/2281. Acesso em: 19 apr. 2026.