Example of Application of GIS on Public Health

Last week, we had 7 people attended the training class of spatial analysis. Seems a lot of people are interested in this area. Attached please find a 4 years old project I involved about 'Temporal and spatial relationship of ozone and asthma'. One thing amazed me by GIS is geostatistics (maybe only thing, sorry), which can convert values among point, line, and area.
http://gis2.esri.com/library/userconf/proc03/p0911.pdf