1. Mullard, A. Nature https://www.nature.com/articles/d41586-020-03370-6 (2020).
2. Nature 589, 170 (2021).
3. Kumar, S., Quinn, S. C., Kim, K. H. & Hilyard, K. M. PLoS One 7, e33025 (2012).
4. Duch, R. et al. Preprint at https://www.medrxiv.org/content/10.1101/2021.01.31.21250866v1 (2021).
5. Duke Global Health Innovation Center. https://launchandscalefaster.org/COVID-19 (accessed 9 March 2020).