Tze-San Lee is a professor emeritus of Western Illinois University and a retired mathematical statistician of Centers for Disease Control and Prevention. He got his Ph. D in Applied Mathematics from State University of New York at Stony Brook in 1976. From 1980 to 2001 he taught mathematics and statistics at the WIU. Since 2002 he has worked for the CDC and was retired in May 2014. In addition, he also taught at Michigan State University, National Chung-Hsing University and The University of Alabama. He has published numerous research papers in applied mathematics, statistics, and biostatistics in epidemiology on topics like health effect on human health from forest fires, risk factors on mortality from disasters of landslides, and misclassification on the exposure status in case-control studies.