Buitrago-Garcia, D., Ipekci, A., Heron, L., Imeri, H., Araujo-Chaveron, L., Arevalo-Rodriguez, I., Ciapponi, A., Cevik, M., Hauser, A., Alam, M., Meili, K., Meyerowitz, E., Prajapati, N., Qiu, X., Richterman, A., Robles-Rodriguez, W., Thapa, S., Zhelyazkov, I., Salanti, G. & Low, N. 2022, 'Occurrence and transmission potential of asymptomatic and presymptomatic SARS-CoV-2 infections: update of a living systematic review and meta-analysis', PLos Medicine, 19(5), article no: e1003987. https://doi.org/10.1371/journal.pmed.1003987