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		| First Author:
 
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		| Kevin x.d.  Huang | 
	
		| Vanderbilt University | 
	
		| kevin.huang@vanderbilt.edu | 
	
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		| Department of Economics, Vanderbilt University, 2301 Vanderbilt Place | 
	
		| Nashville, 37235, USA | 
	
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		| 615 936 7271(Phone) | 
	
		| 615 936 7271(Fax) | 
	
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		| Second Author: 
 
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		| Qinglai  Meng | 
	
		| Oregon State University | 
	
		| Qinglai.Meng@oregonstate.edu | 
	
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		| Third Author: 
 
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		| Jianpo  Xue | 
	
		| Renmin University of China | 
	
		| jpxue@ruc.edu.cn | 
	
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