Brain Science institute of Melbourne : http://www.swinburne.edu.au/lss/bsi/researchunits/ru_hnm.html
Statistics on Alzheimer disease: http://www.alz.co.uk/research/statistics.html
Ginseng compounds and application : http://www.ncbi.nlm.nih.gov/pubmed/19601854
Neuroprotective effects of ginsenosides : http://www.ncbi.nlm.nih.gov/pubmed/17265697