摘要
To the Editor:Since December 2019,the epidemic of coronavirus disease 2019(COVID-19)has become the focus of attention in China and worldwide.Despite the effective control of the outbreak in China,the global situation of COVID-19 was not optimistic which has gradually become a global threat of the year 2020.COVID-19 may cause high mortality in the elderly and patients with cardiovascular diseases,malignant tumors,and other underlying diseases.
基金
This work was supported by a grant from the National Natural Science Foundation of China(No.81672634).
