1. Institute for Korean Regional Studies, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
2. Seoul National University Asia Center (SNUAC), Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
3. Department of Geography, College of Social Science, Chonnam National University, 77 Youngbong-ro, Buk-gu, Gwangju 61186, Republic of Korea
4. Department of Geography, College of Social Science, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea