Since the outbreak of coronavirus disease 2019(COVID-19),the healthcare system of the world has been overwhelmed by this pandemic.The most recent statistic showed that there are now over 3 million people infected and ...Since the outbreak of coronavirus disease 2019(COVID-19),the healthcare system of the world has been overwhelmed by this pandemic.The most recent statistic showed that there are now over 3 million people infected and over 259000 deaths in 210 coun-tries.展开更多
文摘Since the outbreak of coronavirus disease 2019(COVID-19),the healthcare system of the world has been overwhelmed by this pandemic.The most recent statistic showed that there are now over 3 million people infected and over 259000 deaths in 210 coun-tries.
