Lertprasopsuk, Suphawet, and Budsaba Viriyasirivet. “Prevalence and Associated Factors of Anemia in Different Periods of Pregnancy”. Thai Journal of Obstetrics and Gynaecology 31, no. 1 (January 1, 2023): 56–63. accessed September 28, 2026. https://he02.tci-thaijo.org/index.php/tjog/article/view/255995.