» T Hatzis, AAnastasiou, ECardamakis, GAnagnostou, APantos, GPistofidis, E Panagogiannopoulou, E Efthimiadi, V Anastasiou, A Stathopoulos, N Linardos,Υ Koumantaki, G Creatsas. Hemostatic Abnormalities in Primary Unexplained Abortions: A Significant Role for Coagulation Factor XII. 16th FIGO World Congress of Gynecology and Obstetrics, Washington D.C., 5th September 2000.

» T Hatzis, E Cardamakis, T Antoniadi, K Makatsoris, V Sotiracopoulos, N Tsagaris, A Pantos, G Pistofidis, H Karahristou, Υ Koumantaki, H Mantouvalos,V Tzingounis. Hemostatic Abnormalities in Primary Unexplained Abortions: A Significant Role for Homozygous MTHFR Mutation, Responsible for Mild Hyperhomocysteinemia. 16th FIGO World Congress of Gynecology and Obstetrics, Washington D.C., 5th September 2000.

» T. Antoniadi, T. Hatzis, C. Kroupis, E. Economou- Petersen, M.B. Petersen. Prevalence of Factor V Leiden in Greek Blood Donors. 31st Annual Meeting of the European Society of Human Genetics. Geneva, Switzerland, 29 May-1 June 1999.

» T Hatzis, E Cardamakis, E Drivalas, Ν Tsaggaris, Ν Creatsa, M. Petersen, C Mantouvalos. (Intr. by D. Loukopoulos). Study on the Hemostatic Abnormalities in Primary Unexplained and Recurrent Abortions. Blood, vol 92, No 10, Supplement 1, p 119b, November 1998. Abstract presented at ASH December 1998, Miami, Florida, U.S.A

» Θ Χατζής, Ε Καρδαμάκης, Ε Ντριβαλάς, Ν Τσάγγαρης, Δ Γουγωπούλου, Ο Κρεατσά, Β Αναστασίου, Μ Petersen, Χ Μαντούβαλος. Μελέτη Επίπτωσης Αιμοστατικών Ανωμαλιών στις Ανεξήγητες Πρωτοπαθείς και Υποτροπιάζουσες Πρόωρες Αποβολές. 9ο Πανελλήνιο Αιματολογικό Συνέδριο, 12-15 Νοεμβρίου 1998, Ηράκλειο Κρήτης.

» Θ. Αντωνιάδη, Θ. Χατζής, Κ. Μακατσώρης, Ε. Οικονόμου-Petersen, M.B. Petersen. Συχνότητα του Παράγοντα VLeiden σε Ελληνες Αιμοδότες. 9ο Πανελλήνιο Αιματολογικό Συνέδριο, 12-15 Νοεμβρίου Ηράκλειο 1998 Κρήτης.

» T. Hatzis, N. Laoutaris, A. Mentis, A. Parasi, C. Belesi, E. Manioudaki, E. Samaridis, S. Alexia, T. Fountoulaki, E.Dimitriadou, S. Solomou, N. Nikolaou, N. Galanakis. Transient aplastic crisis due to Parvovirus B19 in heterozygous sickle cell anaemia and chronic iron deficiency. ISH-EHA Combined Haematology Congress, Amsterdam, The Netherlands, 4-8 July 1998.

» Laoutaris N, Hatzis T, Marsh J, Belesi C, Samarides E, Alexia S, Manioudaki E. A case of thymoma with pure red cell aplasia, myasthenia Gravis and systemic lupus erythematosus. ISH-EHA Combined Haematology Congress, Amsterdam, The Netherlands, 4-8 July 1998.

» N. Λαουτάρης, Θ. Χατζής, Σ. Αλεξιά, Γ. Δρίβα, Γ. Ερωτοκρίτου, Σ. Σολωμού, Ε. Σαμαρίδης, Χ. Μπέλεση, Ε. Μανιουδάκη, Α. Παράση, Ν. Γαλανάκης. Μελέτη του ανοσολογικού φαινότυπου του περιφερικού αίματος πλασματοκυτταρικών δυσκρασιών με διαφορετική εντόπιση. 8ο Αιματολογικό Συνέδριο, Αθήνα, Νοέμβριος 1997.

» Hatzis T, Driva G, Alexia S, Samarides E, Kapari G. Two colour immunofluorescence in B-lymphoproliferative syndromes. XIVth Meetingof the International Society of Haematology European and African Division, Stockholm Sweden, August 1997.

» Hatzis T, Driva G, Alexia S, Samarides E, Siameti Ch, Laoutaris N. B-lymphocyte subsets CD19++CD5+ and CD20++CD5+ in Immune Thrombocytopenia and Autoimmune Haemolytic Anaemia. XIVth Meeting of the International Society of Haematology European and African Division, Stockholm Sweden, August 1997.

» Laoutaris N, Hatzis T, Alexia S, Driva G, Erotokritou G, Solomou S, Samarides E, Belesi C, Manioudaki E, Galanakis N. Solitary plasmacytoma of the neck, immunophenotypic characteristics of one case and comparison with disseminated cases. XIVth Meetingof the International Society of Haematology European and African Division, Stockholm Sweden, August 1997.

» Laoutaris N, Hatzis T, Erotokritou G, Manioudaki E, Belesi C, Samarides E, Alexia S, Driva G, Nikolaou N. Combined administration of Erythropoietin, Granulocyte-Macrophage Colony-Stimulating Factor (GM-CSF) and Methylprednisolone in Myelodysplastic Syndromes. XIVth Meetingof the International Society of Haematology European and African Division, Stockholm Sweden, August 1997.

» Laoutaris N, Hatzis T, Alexia S, Samarides E, Belesi C, Driva G, Manioudaki E, Kalagiakou E. Comparative study of different methods to determine peripheral blood monocytes. XIVth Meetingof the International Society of Haematology European and African Division, Stockholm Sweden, August 1997.

» Hatzis T, Marsh J, Gordon-Smith E. Comparison of Rabbit Antithymocyte Globulin (ATG) with Horse ATG for the first course of treatment for Aplastic Anaemia. 22nd Annual Meeting of the European Group for Blood Marrow Transplantation, Vienna Austria, 1996.

» Χατζής Θ, Μόσχου-Παραρά Μ, Γιοτάκος Κ, Σπηλιωτοπούλου Ι, Διγενοπούλου Ε, Σκλάβου Σ, Μερτζάνος Ε, Κοντοπούλου Ε, Παραράς Μ. Διαταραχή May-Hegglin (Περιγραφή της πρώτης οικογένειας με αυτή τη διαταραχή στην Ελλάδα). 6ο Πανελλήνιο Συνέδριο Αιματολογίας, Λάρισσα, 1994.