Affiliation: | a Department of Mathematics, University of Manitoba, Winnipeg, Man., Canada R3T 2N2 b Department of Mathematics, University of British Columbia, Vancouver, BC, Canada V6T 1Z2 c Department of Mathematics and Statistics, University of Victoria, Victoria, BC, Canada V8W 3R4 d Department of Mathematics and Statistics, University of New Brunswick, Fredericton, NB, Canada E3B 5A3 e Centre for Disease Modeling, Department of Mathematics and Statistics, York University, Toronto, Ont., Canada M3J 1P3 |