Chiengthong, Keerati, Wilasinee Areeruk, Somsook Santibenchakul, Shina Oranratanaphan, and Tarinee Manchana. 2022. “Universal COVID-19 Testing Among Hospitalized Pregnant Women During the Initial COVID-19 Period in Thailand”. Biomedical Sciences and Clinical Medicine 61 (3):121-6. https://he01.tci-thaijo.org/index.php/CMMJ-MedCMJ/article/view/257848.