1. 4th Postgraduate Course in Hepatobiliary, Pancreatic and Gastric Diseases, Athens 5 – 7/12/1996
  2. Course on Postgraduate Gastroenterology, Oxford 5 – 8/1/1997
  3. Gastroenterology Update, Boston March 1997
  4. Digestive Disease Week meetings, May 10-16, 1997, Washington, DC
  5. Xth International Workshop on Gastroduodenal Pathology and Helicobacter Pylori, Lisbon, Portugal, 12-14/09/1997.
  6. Final Investigators Meeting Bond & Opera & Encore studies Omeprazole in Dyspepsia, Faros, Portugal, 16/09/1997.
  7. 6th United European Gastroenterology Week, Birmingham, 20 – 22/10/1997.
  8. London Advanced Gastroenterology Course, London 17 – 28/11/1997.
  9. International Seminars in new Frontiers in the Diagnosis and Management of GI Diseases, Athens 4 – 6/12/1997.
  10. Postgraduate Course of the American Society for Gastrointestinal Endoscopy, May 21-22, 1998, New Orleans, Louisiana.
  11. XVIth European Workshop on Digestive Endotherapy, Brussels, June 22 – 24/1998
  12. XXVth Balkan Medical Week, Ioannina 1 – 4/7/1998. Συμμετοχή σε στρογγυλό τραπέζι ως προσκεκλημένη ομιλήτρια.
  13. 11th World Congress of Gastroenterology, September 6-11 1998, Vienna, Austria. Ανακοίνωση εργασιών.
  14. 6th International Postgratuate Course in New Frontiers in GI Oncology, Athens 11 /12/1998.
  15. 7th United European Gastroenterology Week 13 – 17 November 1999,Rome Italy.  Ανακοίνωση εργασιών.
  16. IBD Symposium ‘The doctor in focus’, Montreux Switzerland, 4 & 5/2/2000.
  17. Endosonography live in Amsterdam, Amsterdam 8 – 9/6/2000.
  18. 8th United European Gastroenterology Week, Brussels, 25 – 30/11/2000. Ανακοίνωση εργασιών.
  19. British Society of Gastroenterology Annual Meeting, Glasgow, 18 –21/3/2001. Ανακοίνωση εργασιών.
  20. London Inflammatory Bowel Disease Forum, St Mark’s Hospital, London, 3/4/2001.
  21. Bowel Cancer Seminar, St Marks Hospital, London, 30/4/2001.
  22. British Society of Gastroenterology Annual Meeting, Birmingham, 17–20/3/2002. Προφορική Ανακοίνωση εργασιών.
  23. ‘Advances in mucosal immunology’, Section of clinical immunology & allergy. Academic department, Royal Society of Medicine, London, 13/5/2002
  24. Digestive Disease Week 2002, 19-22/5/2002, San Francisco, California.Ανακοίνωση εργασιών.  
  25. London Inflammatory Bowel Disease Forum, Royal London Hospital, London, 15/10/2002.
  26. 3rd International Inflammatory Bowel Disease Meeting, , Chester Town Hal, 9-11/2/2003 Ανακοίνωση εργασιών.
  27. British Society of Gastroenterology Annual Meeting, Birmingham 23/326/3/2003. Ανακοίνωση εργασιών.
  28. Digestive Disease Week 2003, 17-22/5/2003, Orlando, FL. Ανακοίνωση εργασιών.
  29. International Symposium ‘Inflammatory Bowel Disease from the bench to bedside-Crete 2003’, Heraklion 27-28/6/2003. Ανακοίνωση εργασίας British Society of Gastroenterology Annual Meeting, Glasgow 21/3-24/3/2004. Ανακοίνωση εργασιών.
  30. Advances in therapeutic endoscopy. Athens 27-29/11/2003.
  31. Digestive Disease Week 2004, 15-20/5/2004, New Orleans, LA. Ανακοίνωση εργασιών.
  32. ASGE Postgraduate Course, 19 & 20/5/2004, New Orleans, LA.
  33. 4th International Inflammatory Bowel Disease Meeting, Liverpool, UK 6TH8TH February 2005.
  34. British Society of Gastroenterology Annual Meeting, Birmingham 14-17/3 Ανακοίνωση εργασιών.
  35. Digestive Disease Week 2005, 14-19/5/2005, Chicago, IL. Ανακοίνωση εργασιών.
  36. AGA Spring Postgraduate Course 2005, 14 & 14/5/2005, Chicago, IL.
  37. ASGE Postgraduate Course, 18 & 19/5/2005, Chicago, IL.
  38. Meetings the Needs of Your Patients with Crohn’s Disease, Athens 2728/4/2007.
  39. 3rd International Congress on Gastrointestinal Oncology-Progress and Prospects. Creete, 14-16/6/2007.
  40. 15th United European Gastroenterology Week, 27-31 October 2007, Paris, France.
  41. 3rd Congress of ECCO. Lyon, France 28/2-1/3/ 2008. Ανακοίνωση εργασιών.
  42. 15th United European Gastroenterology Week, 18-22 October 2008, Vienna, Austria.
  43. 4th Congress of ECCO. Hamburg, Germany 5-7/2/2009.
  44. 27th Gastroenterology and Endotherapy European Workshop. Brussels 22-24 June 2009.
  45. Gastro UEGW/WCOG. London -United Kingdom 2009.
  46. 5th Congress of ECCO. Prague 25-27/02/2010
  47. 18th United European Gastroenterology Week. Barcelona 23-27/10/2010
  48. Clinical Observation Programme, University Hospital Leuven, 23-24/9/2010
  49. 6th Congress of ECCO. Dublin, Ireland, 24-26/02/2011
  50. 19th United European Gastroenterology Week. Stockholm, Sweden. 2226/10/2011
  51. 7th Congress of ECCO. Barcelona, Spain, 16-18/02/2012
  52. Gastroenterology and Endotherapy European Workshop. Brussels 1820/06/2012
  53. 20th United European Gastroenterology Week. Amsterdam, The Netherlands, 20-24/10/2012
  54. 8th Congress of ECCO. Vienna, Austria, 14-16/02/2013
  55. 21th United European Gastroenterology Week. Berlin, Germany, 1216/10/2013
  56. Quality in Endoscopy. IBD and Small Bowel Disease. Budapest, Hungary, 1516/10/2013.
  57. 9th Congress of ECCO. Copenhagen, Denmark, 20-22/02/2014.
  58. 23th United European Gastroenterology Week. Barcelona, Spain, 2428/10/2015
  59. 10th Congress of ECCO. Barcelona, Spain, 18-21/02/2015
  60. 11th Congress of ECC. Amsterdam, The Netherlands, 16-19/3/2016
  61. 12th Congress of ECCO. Barcelona, Spain, 15-18/02/2017.