Chaiyarach, S., R. Komwilaisak, K. Kongwattanakul, S. Hayakungchat, and P. Saksiriwuttho. “Nomogram of Thyroid in Northeastern Thai fetuses at GA 20 0/7- 36 6/7 weeks”. Thai Journal of Obstetrics and Gynaecology, vol. 29, no. 6, Nov. 2021, pp. 349-57, doi:10.14456/tjog.2021.41.