Lerdlamyong, K. “SAR-CoV-2 Specific Antibody Detection Among Heath Care Workers With Direct Contact to COVID-19 Patients in Vachira Phuket Hospital”. Region 11 Medical Journal, vol. 35, no. 2, Oct. 2021, https://he02.tci-thaijo.org/index.php/Reg11MedJ/article/view/248985.