1. Department of NeurologyUniversity of PennsylvaniaPhiladelphiaPAUSA
2. Center for Functional Neuroimaging, University of PennsylvaniaPhiladelphiaPAUSA
3. Department of RadiologyUniversity of PennsylvaniaPhiladelphiaPAUSA
4. Department of PsychiatryUniversity of PennsylvaniaPhiladelphiaPAUSA
5. AstraZeneca R&D,SödertäljeSweden