[1] Uppsala Univ, Dept Business Studies, Box 513, S-75120 Uppsala, Sweden
[2] Univ Gothenburg, Gothenburg, Sweden
[3] Univ Eastern Finland, Joensuu, Finland
[4] Univ Publ Navarra, Dept Business Adm, Campus Arrosadia S-N, Navarra 31006, Spain
[5] Univ Publ Navarra, Inst Adv Res Business & Econ INARBE, Campus Arrosadia S-N, Navarra 31006, Spain
[6] Shenzhen MSU BIT Univ, Fac Econ, Shenzhen, Peoples R China