Tangwiwat P, Tuangrattananon T, Limchumroon W, Ingthom B, Topothai C, Topothai T. Severity and Associated Factors of COVID-19 Infection among Pregnant and Postpartum Women: A Cross-Sectional Study in Thailand. J Health Syst Res [internet]. 2024 Jun. 27 [cited 2025 Jul. 1];18(2):251-63. available from: https://he04.tci-thaijo.org/index.php/j_hsr/article/view/1478