Ongkittikul, MD, Supitcha, and Photchana Rompho, RN. “SARS-CoV-2 IgG Antibody Response After Immunization of Healthcare Workers With Inactivated COVID-19 Vaccine (CoronaVac) at Phyathai 3 Hospital”. The Bangkok Medical Journal 17, no. 2 (September 29, 2021): 100. Accessed October 26, 2021. https://he02.tci-thaijo.org/index.php/bkkmedj/article/view/251091.