Using layers to map over cancer data from Iowa from 2000-2005 they were able to represent this data among different geographic factors of the area. In conclusion they found that when mapping disease over an area each map might require different approaches to appropriately make connections to the diease and the area. However, they want this article to spark interest in mapping disease and the area that it encompasses in a new way to have access to new data and understanding.
Beyer, K. M., Tiwari, C., & Rushton, G. (2012). Five essential properties of disease maps. Annals of the Association of American Geographers, 102(5), 1067-1075.