1. Report of the WHO-China Joint Mission on Coronavirus Disease 2019 (COVID-19),2020
2. WHO Coronavirus (COVID-19) Dashboard,2021
3. Spatio-temporal modeling of COVID-19 prevalence and mortality using artificial neural network algorithms;Kianfar;Spatial and Spatio-temporal Epidemiology,2021
4. Europe's first coronavirus case was in December: scientists;Newyork Post,2020
5. A.L. Europe's COVID-19 pandemic spirals out of control,2020