1. University of Pennsylvania Frontotemporal Degeneration Center, Department of Neurology; University of Pennsylvania; Philadelphia PA
2. Center for Neurodegenerative Disease Research, Department of Pathology and Laboratory Medicine; University of Pennsylvania; Philadelphia PA
3. Department of Neurology; Herford Hospital; Herford Germany
4. Brain-Behavior Laboratory, Department of Psychiatry, Perelman School of Medicine; University of Pennsylvania; Philadelphia PA
5. Memory and Aging Center, Department of Neurology; University of California, San Francisco; San Francisco CA
6. Translational Neuropathology Research Laboratory; University of Pennsylvania; Philadelphia PA