1. World Health Organization. Available from: https://www.who.int/news-room/fact-sheets/detail/cancer. [Last accessed on 2020 Apr 20].
2. Diagnosis of severe respiratory infections in immunocompromised patients;Azoulay;Intensive Care Med,2020
3. High mortality from viral pneumonia in patients with cancer;Kim;Infect Dis (London, England),2019
4. World Health Organization. WHO Director-General's Opening Remarks at the Media Briefing on COVID-19; 11 March, 2020. Available from: https://www.who.int/dg/speeches/detail/who-director-general-s-opening-remarks-at-the-media-briefing-on-covid-19---11-march-2020. [Last accessed on 2020 Apr 20].
5. Gorbalenya AE, Baker SC, Baric RS, Groot RJ, Drosten C, Gulyaeva AA, et al. Severe Acute Respiratory Syndrome-Related Coronavirus: The Species and its Viruses – A Statement of the Coronavirus Study Group. bioRxiv 2020.02.07.937862; 2020. [doi: 10.1101/2020.02.07.937862].