1. Sipahi Tansu, İpekçioğlu Harika, Teziç Tahsin, Uzel Gülbu. Recurrent Lower Respiratory Tract Infections in Infancy: A Study of 99 Cases. XXI Congress of UMEMPS, October 24-27 1993, İzmir. Abstract Book:152.
  2. Sipahi Tansu, Teziç Tahsin, Özeren Melike, Erbaş Belkıs, Erbengi Günaydın. Primary Congenital Lymphedema. XXI Congress of UMEMPS, October 24-27 1993, İzmir. Abstract Book:107.
  3. Sipahi Tansu, Akçayöz Ayşegül, Delibaş Ali, Teziç Tahsin, Yöney Aysel. Reye`s Syndrome: A Study of 15 Cases. XXI Congress of UMEMPS, October 24-27 1993, İzmir. Abstract Book:94.
  4. Sipahi Tansu, Uysal Zümrüt, Akar Nejat, Kemahlı Sabri, Cin Şükrü, Arcasoy Ayten. Survival and Complications in Medically Treated 65 Patients with Thalassemia Major. XIII. Meeting of The İnternational Society of Haematology, 3-8 September 1995, İstanbul, Türkiye. Abstract Book:764.
  5. Kemahlı Sabri, Gürman Ceyda, Akar Nejat, Yıldırmak Yıldız, Sipahi Tansu, Uysal Zümrüt, Cin Şükrü, Arcasoy Ayten. Protein C, Protein S, Antithrombin, D-Dimer Levels and Lupus Anticoagulants in Homozygous Beta Thalassemia Patients. XVth Congress of the International Society on Thrombosis and Haemostasis, Jerusalem, Israel, June 11-16, 1995; Thrombosis and Haemostasis. Abstracts Book: 223.
  6. Sipahi Tansu, Akar Nejat, Eğin Yonca, Dinçer Nazlı, Cin Şükrü. Serum Interleukin 2 and interleukin 6 levels in zinc deficiency and iron deficiency anemia. XIVth Meeting of the International Society of Haematology. Stockholm, Sweden, August 30 – September 4 1997, Abstract Book: p.208.
  7. Akar Nejat, Söylemez Feride, Sipahi Tansu, Uzunali Ömer. “Coffee” as Pica Causing Iron and Zinc Deficiency: Effect on Iron and Zinc Absorption. ISH-EHA Combined Haematology Congress, Amsterdam, The Netherlands, 4-8 July 1998. British Journal of Haematology. 102: 41, 1998.
  8. Akar Nejat, Akar Ece, Deda Gülhis, Sipahi Tansu, Önsal A, Cin Şükrü. Factor V 1691 G-A, Prothrombin 20210 G-A, and Methylenetetrahydrofolate Reductase 677 C-T Variants in turkish Children with Cerebral Infarct. Haematologica; EHA-4 Abstracted Book, Barcelona June 9-12, 1999
  9. Akar Nejat, Yılmaz Erkan, Akar Ece, Avcı Ferit, Sipahi Tansu. Plasminogen Activator Inhibitors 1 4G/5G Polymorphism in Thrombothic Patients With and Without FV 1691 G-A Hematologica EHA-4 Abstracted Book, Barcelona June 9-12, 1999
  10. Akar Ece, Akar Nejat, Yılmaz Erkan, Deda Gülhis, Sipahi Tansu. Factor V (His 1299 Arg) in Young Turkish Patients with Cerebral Infarct. Inter J Hematol, Abstracted Book, ISH, Toronto, Canada, August 26-30, 2000
  11. Akar Nejat, Akar Ece, Deda Gülhis, Avcı Ferit, Özmen F, Yalçın Atilla, Sipahi Tansu, Cin Şükrü. Coexistence of Two Prothrombotic Mutations, Factor V 1691 G-A, and Prothrombin Gene 20210 G-A: Risk of Thrombosis. Inter J Hematol, Abstracted Book, ISH, Toronto, Canada, August 26-30, 2000
  12. Akar Ece, Deda Gülhis, Sipahi Tansu, Akar Nejat. Endothelial Nitric Oxide Synthase 298 Glu-Asp Variant and Pediatric Cerebral Infarct. Inter J Hematol, Abstracted Book, ISH, Toronto, Canada, August 26-30, 2000.
  13. Uçkun Ayşin, Teziç Tahsin, Fırat Serap, Sipahi Tansu. Impaired Fasting Glucose and Type 2 Diabetes in Turkish Children: Is Obesity Really a Risk Factor? Pediatr Res 51(4):723 Part 2, Suppl S, Apr 2002
  14. Sipahi Tansu, Tavil Betül, Ünver Yücel. Neutrophil Hypersegmentation in Children with Iron Deficiency Anemia.
    6th International Congress of Tropical Pediatrics. 26-30 September 2002, Turkey. Abstract Book p:143.
  15. Onur Banu, Sipahi Tansu, Karademir Selmin, Tavil Betül, Yöney Aysel. Hematologic Parameters in Early Diagnosis of Iron Deficiency in Children with Cyanotic Congenital Heart Disease. 6th International Congress of Tropical Pediatrics. 26-30 September 2002, Turkey. Abstract Book p:144.
  16. Tavil Betül, Sipahi Tansu, Gökçe Hafize, Akar Nejat. Effect of Twice Weekly v.s. Daily Iron Treatment in Turkish Children With Iron Deficiency Anemia. 6th International Congress of Tropical Pediatrics. 26-30 September 2002, Turkey. Abstract Book p:144.
  17. Dönmez BN, Deda Gülhis, Sipahi Tansu, Çaksen Hüseyin, Cin Şükrü, Akar Nejat. TFPI -33T/C Polymorphism in Turkish Children with Cerebral Infarct. Pathophysiol Haemost Thromb 2003: 33(suppl 2). 18th International Congress on Thrombosis,Ljubljana-Slovenia, June 20-24, 2004.
  18. Sipahi Tevfik, Demirci Kamber, Sipahi Tansu. Comparison of Maternal and Cord Blood Hematological Parameters. XXX. World Congress of the International Society of Hematology.İstanbul-Türkiye, Sep 28- Oct 2, 2005. Abstract Book p:137.
  19. Sipahi Tansu, Akar Nejat. Effect of Some Genetic Polymorphisms on the Incidence and Outcome of Severe Sepsis. XXX. World Congress of the International Society of Hematology.İstanbul-Türkiye, Sep 28- Oct 2, 2005. Abstract Book p: 207.
  20. Sipahi Tansu, Aslıhan Kara, Ayca Kuybulu, Yonca Egin, Nejat Akar. Congenital thrombotic risk factors in beta-thalassemia.20th International congress on Thrombosis (June 25-28, 2008,Athens, Greece).