[1] UCL, Div Med, London, England
[2] Technol Educ Inst Athens, Dept Business Adm, Athinai, Greece
[3] Technol Educ Inst Epirus, Dept Finance & Auditing, Preveza, Greece
[4] Technol Educ Inst Thessaloniki, Dept Mkt & Advertising, Thessaloniki, Greece
[5] Technol Educ Inst Thessaloniki, Dept Farm Management, Thessaloniki, Greece