Talic, S, Shah, S, Wild, H, Gasevic, D, Maharaj, A, Ademi, Z, Li, X, Xu, W, Mesa Eguiagaray, I, Rostron, J, Theodoratou, E, Zhang, X, Motee, A, Liew, D & Ilic, D 2021, ' The effectiveness of non-pharmaceutical interventions in reducing SARS-CoV-2 transmission and COVID-19 incidence and mortality : systematic review and meta-analysis ', British Medical Journal (BMJ), vol. 2021, no. 375, e068302 . https://doi.org/10.1136/bmj-2021-068302