Habre, W., Disma, N., Virag, K., Becke, K., Hansen, T., Jöhr, M., … Trial, N. A. G. of the E. S. of A. C. (2017). Incidence of severe critical events in paediatric anaesthesia (APRICOT): a prospective multicentre observational study in 261 hospitals in Europe. The Lancet. Respiratory Medicine, 5(5), 412-425. https://doi.org/10.1016/S2213-2600(17)30116-9