Sudjai, Dennopporn, and Adjima Soongsatitanon. “Adverse outcomes in advanced maternal age: A case-control study”. Vajira Medical Journal : Journal of Urban Medicine 64, no. 2 (April 30, 2020): 117–124. accessed September 18, 2026. https://he02.tci-thaijo.org/index.php/VMED/article/view/218999.