The article was originally published with an incorrect affiliation for the author.

The affiliation of Seungwoo Han was originally given as Management Science and Information Systems, Rutgers Business School, Rutgers, The State University of New Jersey, NJ, USA. The correct affiliation is Department of Political Science and International Relations, Kyonggi University, Suwon, South Korea.

The errors have been corrected and the online HTML and PDF versions updated. The publisher apologises for this error.