المؤلفون: Settle, Christopher, Wilcox, Mark H., Rashid, Asrar, Cooke, R. Stephen, Patterson, Victor, Abernethy, Laurence

المصدر: BMJ: British Medical Journal, 1999 Jan 01. 318(7176), 123-124.

الوصول الحر: https://www.jstor.org/stable/25181506Test

المؤلفون: Cooke, R. Stephen, Cumming, W. J. K., Cowie, Richard A.

المصدر: British Journal of Neurosurgery ; volume 8, issue 3, page 359-363 ; ISSN 0268-8697 1360-046X

الإتاحة: https://doi.org/10.3109/02688699409029627Test