[1] Univ Illinois, Coll Business Adm MC 243, Dept Informat & Decis Sci, Chicago, IL 60607 USA
[2] Creighton Univ, Coll Business Adm, Dept Informat Syst & Technol, Omaha, NE 68178 USA
[3] Univ Illinois, Coll Business Adm MC 243, Dept Managerial Studies, Chicago, IL 60607 USA