[1] Massachusetts Gen Hosp, Dept Surg, Boston, MA USA
[2] Harvard Med Sch, Boston, MA 02115 USA
[3] Hlth Workforce Educ HEAL Edu Study Grp, Athens, Greece
[4] Natl & Kapodistrian Univ Athens, Sch Med, Athens, Greece
[5] Soc Jr Doctors SJD, Athens, Greece
[6] Natl & Kapodistrian Univ Athens, Sch Med, Dept Hyg Epidemiol & Med Stat, Athens, Greece
[7] Aristotle Univ Thessaloniki, Sch Med, Thessaloniki, Greece
[8] Univ Patras, Sch Med, Patras, Greece
[9] Queen Mary Univ London, Barts & London Sch Med & Dent, London, England
[10] European Univ Cyprus, Sch Med, 55 Fruit St,WACC721, Nicosia, MA 02114, Cyprus
[11] WHO, Hlth Workforce Dept, Geneva, Switzerland
[12] Brigham & Womens Hosp, Dept Neurol, 55 Fruit St,WACC721, Boston, MA 02114 USA