Dr. Alfonso Velandia starts each hospital shift by counting his troops in the battle against coronavirus.
원문출처 : https://www.cnn.com/2021/02/05/americas/coronavirus-vaccine-shortage-colombia-intl/index.html
원문출처 : https://www.cnn.com/2021/02/05/americas/coronavirus-vaccine-shortage-colombia-intl/index.html