• World's hopes for vaccine may run in these health care workers' veins
원문출처 : https://www.cnn.com/2020/07/27/asia/north-korea-coronavirus-threat-intl-hnk/index.html
원문출처 : https://www.cnn.com/2020/07/27/asia/north-korea-coronavirus-threat-intl-hnk/index.html