[1] Shaanxi Normal Univ, Int Business Sch, Xian, Peoples R China
[2] Katholieke Univ Leuven, Chinese Studies Grp, Leuven, Belgium
[3] Katholieke Univ Leuven, Dept Econ, Leuven, Belgium
[4] Univ N Carolina, Carolina Populat Ctr, Gillings Sch Global Hlth, Dept Hlth Policy & Management, Chapel Hill, NC USA
[5] Minzu Univ China, Sch Econ, Beijing, Peoples R China
[6] Minzu Univ China, China Inst Vitalizing Border Areas & Enriching Peo, Beijing, Peoples R China
[7] Stanford Univ, Stanford Ctr Chinas Econ & Inst, Palo Alto, CA USA