Phoungpaka, A., O-Prasertsawat, P., Taneepanichskul, S., & Pandii, W. (1998). Comparative Obstetric Outcomes between Adolescent Pregnancies and Pregnancies in Women Aged 20-30 years. Thai Journal of Obstetrics and Gynaecology, 10(3), 157–160. retrieved from https://he02.tci-thaijo.org/index.php/tjog/article/view/257060