Phoungpaka, A., O-Prasertsawat, P., Taneepanichskul, S. and 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 (Sep. 1998), 157–160.