1. Doojin Ryu is at the; College of Economics, Sungkyunkwan University, Jongno-gu, Seoul, Republic of Korea [Correction added on 19 December 2014, after first online publication: the affiliation “Financial Economics at the School of Economics, Chung-Ang University, Seoul, Republic of Korea” was changed to “College of Economics, Sungkyunkwan University, Jongno-gu, Seoul, Republic of Korea”]