Engler-Stringer is an associate professor of the Community Health and Epidemiology department at the University of Saskatchewan. Hanning is a professor in the faculty of Applied Health Sciences at the University of Waterloo. They are writing onEngler-Stringer is an associate professor of the Community Health and Epidemiology department at the University of Saskatchewan. Hanning is a professor in the faculty of Applied Health Sciences at the University of Waterloo. They are writing on.