Chanrachakul, Boonsri, Yongyoth Herabutya, Somsak Suthutvoravut, and Somsak Suthutvoravut. “Ramathibodi Hospital Standard Growth for Birthweight from 28 to 42 Gestational Weeks”. Thai Journal of Obstetrics and Gynaecology 9, no. 1 (March 1, 1997): 7–11. accessed September 28, 2026. https://he02.tci-thaijo.org/index.php/tjog/article/view/257301.