• Advisor to W.H.O (World Health Organization) and the Minister of Health, Ministry of Health, Greece
  • Official representative, Greek Ministry of Health. “Eighth European Regional Meeting of National AIDS Coordinators” World Health Organization. Athens, Oct. 1994.
  • Official Observer, Greek Ministry of Health and National School of Public Health. 16th General Assembly of ASPHER (Association of Schools of Public Health in the European Region): “Information Policy in Public Health.” Cracow, Oct. 1994.
  • Invited Observer, Vienna Festival 2000. Vienna, March 2000.
  • Invited Active Member, “Action Committee for Collaborations between University and Local Communities and the Region”, Senate, University of Peloponnese