Thanasitthichai, S.; Thaiyakul, A.; สง่า ณ.; Poovorawan, Y.; Kwanjaroensub, S.; Yingin, P. Viral Infectivity of Asymptomatic or Mild Symptomatic without Risk Factors COVID-19 Case-patients at 7 and 10 Days after Diagnosis. J DMS 2022, 47, 13-21.