1. Ruopeng An, Brown School, Washington University, St. Louis, MO
2. Yingjie Qiu, Research Assistant, School of Economics and Resource Management, Beijing Normal University, Beijing, China;, Email: qyj_goalkeeper@163.com
3. Xiaoling Xiang, Assistant Professor, School of Social Work, University of Michigan, Ann Arbor, MI
4. Mengmeng Ji, PhD Candidate, Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Champaign, IL
5. Chenghua Guan, Professor, School of Economics and Resource Management, Beijing Normal University, Beijing, China