[1] McGill Ctr Studies Aging, Verdun, PQ, Canada
[2] GlaxoSmithKline, Stevenage, Herts, England
[3] Univ Western Ontario, London, ON, Canada
[4] Clin Neurol, Trois Rivieres, PQ, Canada
[5] Univ British Columbia, Vancouver, BC V5Z 1M9, Canada
[6] Univ Toronto, Toronto, ON, Canada
[7] Univ Ottawa, Ottawa, ON, Canada
[8] Alzheimers Assoc, Potomac, MD USA
[9] Univ Toronto, Toronto, ON, Canada
[10] GlaxoSmithKline, Mississauga, ON, Canada