Imai, Kimitoshi. “A Parity-Based Analysis of Women of Advanced Maternal Age and Delivery”. Journal of Clinical Gynecology & Obstetrics 14, no. 2 (January 1, 2025): 39–44. Accessed January 10, 2026. https://jcgo.elmerpub.com/index.php/jcgo/article/view/1515.