Ming-Jen Lin obtained his Ph.D from University of Chicago in 2002. He is a Freakonomics-style applied micro-economist interested in using economic tools and novel identification strategy to understand social phenomena. His research topic includes democracy and crime, unemployment and crime, the long run effect of low birth weight (on test score and crime), testing fetal origin hypothesis, and most notably, Hepatitis B and the case of missing women. http://homepage.ntu.edu.tw/~mjlin/