President of Organizing and Scientific Committee of 9 International & European Congresses and of 7 National Congresses in the field of Regional Anesthesia , Pain Management and Palliative Care Invited Speaker( more than 152) European and World Congresses on Regional Anaesthesia and Pain Management Chair or Co-Chair person of Round Tables in European and International Congresses Author or Co-author of over 150 free papers and posters in Congress Proceedings and publications in international journals