1 Division of Nuclear Medicine, Department of Radiology, University of Pennsylvania, Philadelphia, PA, USA; ; Center for Spirituality and the Mind, University of Pennsylvania, Philadelphia, PA, USA;
2 Center for Spirituality and the Mind, University of Pennsylvania, Philadelphia, PA, USA; ; Alzheimer Research and Prevention Foundation, Tucson, AZ, USA.
3 Division of Nuclear Medicine, Department of Radiology, University of Pennsylvania, Philadelphia, PA, USA;
4 Center for Spirituality and the Mind, University of Pennsylvania, Philadelphia, PA, USA;