Parrado, Ralph. “Metronidazole Use During the First Trimester of Pregnancy: A Review”. Revista Colombiana de Obstetricia y Ginecología 54, no. 1 (March 31, 2003): 41–46. Accessed July 22, 2024. https://revista.fecolsog.org/index.php/rcog/article/view/631.