Frank W Stahnisch1,2. 1. Department of Community Health Sciences, Hotchkiss Brain Institute and O'Brien Institute for Public Health, Cumming School of Medicine, University of Calgary, 3280 Hospital Drive N.W., Calgary, AB, T2N 4Z6, Canada. fwstahni@ucalgary.ca. 2. Department of History, Faculty of Arts, University of Calgary, 2500 University Drive N.W., Calgary, AB, T2N 1N4, Canada. fwstahni@ucalgary.ca.