1. Department of Nuclear Medicine and Radiobiology University of Sherbrooke Sherbrooke Quebec Canada
2. Martinos Center ‐ MGH ‐ Harvard Medical School Charlestown Massachusetts USA
3. MR Clinical Science, Philips Healthcare Canada Markham Ontario Canada
4. Research Center on Aging, Division of Neurology, Department of Medicine, Faculty of Medicine and Health Sciences University of Sherbrooke Sherbrooke Quebec Canada