First Author:   Seung Hoon Lee Gerogia Institute of Technology seunghoon@gatech.edu   School of Economics, 221 Bobby Dodd Way NW Atlanta, 30332, United States   4048944453(Phone) 4048944453(Fax) https://sites.google.com/view/seunghoon/home Second Author: Yong Suk Lee Stanford University yongslee@stanford.edu         https://web.stanford.edu/~yongslee/