1. Department of Industrial Economic Research, Jeonbuk Institute, 1696 Kongjwipatjwi-ro, Wansan-gu, Jeonju-si, Jeollabuk-do 55068 Republic of Korea;
2. Department of International Trade, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do 54896 Republic of Korea