[1] Yale Univ, Yale Sch Med, Dept Neurol, New Haven, CT 06520 USA
[2] Columbia Univ, Coll Phys & Surg, Taub Inst Res Alzheimers Dis & Aging Brain, New York, NY USA
[3] Columbia Univ, Coll Phys & Surg, Dept Neurol, New York, NY USA
[4] Yale Univ, Yale Sch Publ Hlth, Dept Chron Dis Epidemiol, New Haven, CT 06520 USA
[5] Yale Univ, Ctr Neuroepidemiol & Clin Neurol Res, Yale Sch Med, New Haven, CT 06520 USA