title: Letter to the editor.
authors.affiliation: International Subarachnoid Aneurysm Trial, Neurovascular Research Unit; Radcliffe Infirmary, Oxford UK - Dipartimento di Neuroscienze, Neurologia Universitaria; Torino, Italy - gianniboris.bradac@unito.it.
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Molyneux
authors.forename: G B
authors.initials: GB
authors.lastname: Bradac