Authors: Thomas A van Essen; Hugo F den Boogert; Maryse C Cnossen; Godard C W de Ruiter; Iain Haitsma; Suzanne Polinder; Ewout W Steyerberg; David Menon; Andrew I R Maas; Hester F Lingsma; Wilco C Peul Journal: Acta Neurochir (Wien) Date: 2018-12-19 Impact factor: 2.216