1. Abernethy Holland AJ, Larner AJ. Yttrium-90 implantation. Prog Neurol Psychiatry. 2009;13(5):27.
2. AD2000 Collaborative Group. Long-term donepezil treatment in 565 patients with Alzheimer’s disease (AD2000): randomised double-blind trial. Lancet. 2004;363:2105–15.
3. Atri A, Shaughnessy LW, Locascio JJ, Growdon JH. Long-term course and effectiveness of combination therapy in Alzheimer disease. Alzheimer Dis Assoc Disord. 2008;22:209–21.
4. Birks J. Cholinesterase inhibitors for Alzheimer’s disease. Cochrane Database Syst Rev. 2006;1:CD005593.
5. Birks J, Grimley Evans J. Ginkgo Biloba for cognitive impairment and dementia. Cochrane Database Syst Rev. 2009;1: CD003120.