Research Assistant                                   US----Washington          
Research Assistant                           19255   US-PA-Philadelphia        
Research Assistant                           56972   US-DC-Washington          
Research Assistant                           19255   US-PA-Philadelphia        
Research Assistant                           80299   US-CO-Denver              
Research Assistant                                   SA----Jeddah              
Research Assistant                           18370   US-PA-Swiftwater          
research assistant                           72730   US-AR-Farmington          
Research Assistant                           02493   US-MA-Weston              
Research Assistant                           10292   US-NY-New York            
Research Assistant                           32653   US-FL-Gainesville         
Research Assistant                                   US----                    
Research Assistant                                   CA----Hamilton            
Research Assistant                                   GH----                    
Research Assistant                           61799   US-IL-Bloomington         
Research Assistant                           22911   US-VA-Charlottesville     
Research Assistant                                   US----Fort Collins        
Research Assistant                           23298   US-VA-Richmond            
Research assistant                                   KE----Nairobi             
Research Assistant                                   CA----Edmonton            
Research Assistant                           60604   US-IL-Chicago             
Research Assistant                           95196   US-CA-San Jose            
research assistant                                   CA----Burnaby             
Research Assistant                           95899   US-CA-Sacramento          
Research Assistant                           39901   US-GA-Atlanta