McGill, Erin, Olaf Berke, Andrew Peregrine, and J. Scott Weese. “Epidemiology of Canine Heartworm (Dirofilaria Immitis) Infection in Domestic Dogs in Ontario, Canada: Geographic Distribution, Risk Factors and Effects of Climate”. Geospatial Health 14, no. 1 (May 13, 2019). Accessed November 17, 2019. https://geospatialhealth.net/index.php/gh/article/view/741.