In [[1958]] Gillingham popularized  wrapping with [[cotton]] or [[muslin]]
((Gillingham FJ. The Management of Ruptured Intracranial Aneurysms. Hunterian Lecture. Ann R Coll Surg Engl. 1958; 23:89–117)).
An analysis of 60 patients showed that 8.5% rebled in ≤ 6 mos, and the annual rebleeding rate was 1.5% thereafter 
((Todd NV, Tocher JL, Jones PA, et al. Outcome Following Aneurysm Wrapping: A 10-Year Follow-Up Review of Clipped and Wrapped Aneurysms. J Neurosurg. 1989; 70:841–846))
(similar to the natural history)