Yamasmit, W., and S. . Chaithongwongwatthana. “Expectant management of superimposed preeclampsia on chronic hypertension at the onset of 22 weeks’ gestation: A case report”. Chulalongkorn Medical Journal, vol. 56, no. 6, Sept. 2023, https://he05.tci-thaijo.org/index.php/CMJ/article/view/822.