[1] Pfizer Inc, Cambridge, MA USA
[2] Pfizer Early Clin Res, Groton, CT USA
[3] George Huntington Inst, Munster, Germany
[4] QuantiMedis GmbH, Munster, Germany
[5] Univ Munster, Dept Clin Radiol, Munster, Germany
[6] Univ Tubingen, Dept Neurodegenerat Dis, Tubingen, Germany
[7] Univ Tubingen, Hertie Inst Clin Brain Res, Tubingen, Germany