1. Covid-19: India imposes lockdown for 21 days and cases rise;Pulla;BMJ,2020
2. Blood Collection increases by 12% in 4 years, still 15% short of requirement,2020
3. Prepare to adapt: blood supply and transfusion support during the first 2 weeks of the 2019 novel coronavirus (COVID ‐19) pandemic affecting Washington State;Pagano;Transfusion,2020
4. Guidance on maintaining a safe and adequate blood supply during the coronavirus disease 2019 (COVID-19) pandemic and on the collection of COVID-19 convalescent plasma: interim guidance, 10 July 2020;World Health Organization,2020
5. Aerosol and surface stability of SARS-CoV-2 as compared with SARS-CoV-1;Van Doremalen;N Engl J Med,2020