1. WHO declares COVID-19 a pandemic;Cucinotta;Acta Bio Medica Atenei Parm,2020
2. Developing a SARS-CoV-2 vaccine at warp speed;O’Callaghan;J Am Med Assoc,2020
3. Limitations of clinical trials;Collet;Rev Prat,2000
4. Postapproval vaccine safety surveillance for COVID-19 vaccines in the US;Lee;J Am Med Assoc,2020
5. Safety monitoring in the Vaccine Adverse Event Reporting System (VAERS);Shimabukuro;Vaccine,2015