1. The novel coronavirus outbreak in Wuhan, China;Zhu;Glob Health Res Policy,2020
2. Centers for disease control and prevention, outbreak of 2019 novel coronavirus (2019-nCoV) in Wuhan, China,2020
3. WHO Characterizes Covid-19 as a pandemic,2020
4. Coronavirus disease 2019 (COVID-19): Prevention and treatment,2020