1. Pneumonia of unknown cause – china. Disease Outbreak News;Organization WH,2020
2. Novel coronavirus (2019-nCoV);WHO,2020
3. 2019 novel coronavirus (2019-nCoV): strategic preparedness and response plan;Health Organization,2020
4. The economic, geopolitical and health impacts of COVID-19;Scott;World Economic Forum,2020
5. Public statement for collaboration on COVID-19 vaccine development;World Health Organization,2020