EARLY REGISTRATION & ACCOMMODATION: 19 June 2021

ABSTRACT SUBMISSIONS DEADLINE: 19 July 2021

CONGRESS
DATE: 19 September 2021

CONGRESS
VENUE: Limak Cyprus Deluxe, Cyprus

INVITATION

Dear Friends of Hemophilia,

It would not be an exaggeration to say that our efforts in the area of Congenital Bleeding Disorders as a country reached their peak. COVID-19 pandemic took away a lot from people’s lives and changed many things in all domains, including healthcare. Both the Hemophilia Society of Turkey and Federation of Hemophilia undertook events in line with their primary objectives and did their best to provide solutions to the ones that suffer; additionally, they realized the 17. International Hemophilia Congress of Turkey with great success. A total of 116 session chairs and presenters from 18 different countries were to take part at the online congress. We had participation from 585 different points at the Medical Hall, 282 different points at the Multidisciplinary Hall (G. Gedikoğlu) and 469 different points at the Symposium Halls.

Since from the beginning of the pandemic, we had access to the ones in scientific as well as socio-economic need on a weekly basis with different themes and different events. No doubt that our treatment centers, healthcare and social security authorities, scientists from different disciplines, our volunteers and employees offering selfless services as well as industry representatives supplying products to patients to cure their bleeding coagulation disorder are the unforgettable heroes behind this success. Additionally, our friends, brothers and sisters, colleagues that share the same sentiments and spend the same kind of efforts in different parts of the world as well as representatives of organizations and institutions that focus on realizing the same objectives were with us throughout the program, even if it was through the screen in this particular year. We would like to express our gratitude to those that contributed and wish them all the best in their future endeavors.

In order to carry this well-deserved success in the area of Hemophilia to the future, we will be holding the 18. INTERNATIONAL HEMOPHILIA CONGRESS OF TURKEY at Limak CYPRUS Deluxe Hotel in Turkish Republic of Northern Cyprus as Hybrid Congress between the dates September 19 – 22, 2021.

We would like to invite you all to participate at our next congress titled “WHEN THE MIST CLEARS AWAY” where we will discuss the latest developments, up-to-date situation and targets all together and would like to wish you all the very best.

Yours respectfully,

Prof. Dr. Bülent ZÜLFİKAR
Congress Co-chair

Prof. Dr. Kaan KAVAKLI
Congress Co-chair

COMMITTEES

Congress Co-Chair

Bülent ZÜLFİKAR

Kaan KAVAKLI

Scientific Committee

Canan ALBAYRAK – Turkey
Bülent ANTMEN – Turkey
Tahir ATİK – Turkey
Can BALKAN- Turkey
Ergül BERBER - Turkey
Cesar GARRIDO - President of WFH - Venezuela
Elmira KADIMOVA - Azerbaycan
Kaan KAVAKLI - Turkey
Robert KLAMROTH - Germany
David LILLICRAP – Canada
Sylvia von MACKENSEN - Germany

Mike MAKRIS – England
Wolfgang MIESBACH - Germany
Declan NOONE - President of EHC - Irland
Brian O’MAHONEY - Ireland
Fahri OVALI – Turkey
Flora PEYVANDI - President of EAHAD - Italy
Gökhan POLAT – Turkey
Stephanie SEREMETIS – USA
Cüneyt TÜRKMEN - Turkey
Victor JIMENEZ-YUSTE - Spain
Bülent ZÜLFİKAR - Turkey

Organizing Committee

Medical
Gülsüm AK
Yasemin Altuner TORUN
Yusuf Ziya ARAL
Yılmaz AY
Fikret BEZGAL
Yusuf BÜYÜKPINARBAŞILI
Alphan KÜPESİZ
Mehmet Can UĞUR
Başak Koç ŞENOL
Gül Nihal ÖZDEMİR

Multidisciplinary
Mustafa AKYOL
Aylin ARIK
Canan ATAY
Fatma BALİ
Emine BUCAK
Caner DADAK
Hale HASCANDAN
Selmin ŞENOL
Ulaş ÜNSAL
Haluk ZÜLFİKAR

Abstract Committee

Gülsüm AK
Canan ALBAYRAK
Bülent ANTMEN
Yusuf Ziya ARAL
Yılmaz AY
Kaan KAVAKLI
Robert KLAMROTH

Alphan KÜPESİZ
Sylvia VonMACKENSEN
Gül Nihal ÖZDEMİR
Gökhan POLAT
Başak Koç ŞENOL
Cüneyt TÜRKMEN
Bülent ZÜLFİKAR

Secreteriat of Congress

Hülya YETİŞENER

Elif YILDIZ

MAIN TOPICS

Congress Topics

Prenatal diagnosis, Genetic counseling
Treatment and follow up of newly diagnosed hemophilia
Hemophilia from past to future
Age-related comorbidity
Hemophilia and osteoporosis
Immune tolerance treatment (ITI) models
Reaching for a bleeding woman
Diagnosing and treating women with bleeding
Oral and Dental health in bleeding disorders
Difficult hemophilia
Mild hemophilia

Extended-half-life products
Bioequivalent medication in hemophilia and potential issues
Subcutaneous Nonfactor Replacement Therapies
Expectations of relatives of hemophilia patients from non-factor therapies
Reimbursement and budgeting of novel therapies
Accessibility to novel therapeutics in bleeding disorders
Gene therapy
Clinical studies that will change treatment
Treatment-associated social and ethical issues
Hemophilia nursing and Adaptation to changing therapies

Hemophilia and communication
Hemophilia and sexuality
Hemophilia and nutrition
Obesity and metabolic disorders
Hemophilia and intergenerational relation
What social media brings and takes away

Factor VII deficiency and new treatment options
Factor X deficiency and new treatment options
Factor XIII deficiency and new treatment options
Plasminogen deficiency and new treatment options
Von Willebrand Disease and new treatment options
Being a carrier of bleeding disorder and new approaches

Factor production activities in Turkey
Roles, collaborative work and gaps regarding non-governmental organizations for bleeding disorders
Significant times for hemophilia patients/patient families, issues and possible solutions
Hemophilia centers and regulations

Priorities of imaging methods and advantages in hemophilia
Increasing importance of ultrasonography in monitoring hemophilia
Efficient data collection and use in hemophilia
Treatment and follow-up guided by registration systems

New approaches in arthropathy treatment
Physical therapy, physiotherapy, exercise
Radioisotope therapy and expectations
Reasons that necessitate orthopedic interventions?

Congress Sessions

Panel discussions
Conferences
Open sessions
Forums
Live online (webinar) sessions
Symposiums
- Nursing
- Dentistry
- Radiology
- Physiotherapy
- Genetics
Satellite sessions
Exhibitions
Interactive children’s room activities
Treatment room activities

INVITED SPEAKERS

Brian O Mahony

Carmen Escuriola

Carlo Martinoli

Cesar Garrido

Declan Noone

Flora Peyvandi

Michael Makris

Robert Klamroth

Sylvia von Mackensen

Victor Jimenez Yuste

Wolfgang Miesbach

SCIENTIFIC PROGRAM

TIME	MEDICAL HALL
16:30-17:00	OPENING SPEECH
17:00-18:00	PANEL 1 WHEN THE MIST CLEARS AWAY Session Chairs: Cesar GARRIDO, Muzaffer DEMİR Speakers: * Things We Do Under the Fog Bülent ZÜLFİKAR * Things We Will Do As Fog Disappears Kaan KAVAKLI
18:00-19:00	PANEL 2 BLEEDING DISORDERS AND COMORBIDITY Session Chairs: Orhan AYYILDIZ, Mehmet SÖNMEZ Speakers: * Cardiovascular Incidents Cem AR * Mental Health Vahap OKAN * Malignancies Fahri ŞAHİN
19:00-19:30	HEMOPHILIA and LABORATORY Session Chairs: Salih AKSU, Güneş AK Speakers: * Laboratory Tests in Changing Replacement Therapies Yılmaz AY * Laboratory Tests in Inhibitor Cases Sema GENÇ

TIME	MEDICAL HALL	TIME	SYMPOSIUM ON CLINICAL RESEARCH IN HEMOPHILIA Symposium Chairs: Bülent ZÜLFİKAR, Kaan KAVAKLI	TIME	NURSING SYMPOSIUM
09:00-10:00	PANEL 3 COVID 19 and BLEEDING DISORDERS Session Chairs: Namık ÖZBEK, Fahri OVALI * Twitter and Haemophilia Michael MAKRIS * The Impact of the Pandemic on Hemophiliacs and Treaters in Turkey Bülent ZÜLFİKAR * Coagulation Tests During COVID19 Zühre KAYA	09:00-10:30	Chairs: Tunç FIŞGIN, Zeynep KARAKAŞ * Clinical Research in Turkey İbrahim HAZNEDAROĞLU * Legislation on Healthcare Research Uzm. Mol. Biol. Gökhan ÖZKAN TİTCK (Turkish Medicine and Medical Devices Agency)- Clinical Research Unit Head * TÜSEB Presidency Batuhan YEŞİLYURT * Industry Representatives Asude ADEMOĞULLARI Çağla AKMEMİŞ	09:00-09:15	OPENING SPEECHES Kaan KAVAKLI Bülent ZÜLFİKAR Emine BUCAK Hülya BİNGÖL Selmin ŞENOL
10:00-10:45	INDUSTRY SESSION-1 BAYER Kaan KAVAKLI Bülent ANTMEN Can BALKAN Salih AKSU	10:30-11:00	Coffee Break	09:15-10:45	Session Chairs: Selmin ŞENOL, Talia İLERİ 09:15 - 09:45 Diagnosis and Monitoring of Symptoms Gül Nihal ÖZDEMİR 09:45 - 10:15 Laboratory Analysis, Taking Samples, Interpreting Samples A. Fatih AYDIN 10:15 - 10:45 Current Situation in Hemophilia Treatment Melike SEZGİN EVİM
10:45-11:15	Coffee Break	11:00-12:30	Chair: Özcan BOR * Monitor Representatives Gizem ÇITAK * Field Staff Funda CİGA * Phase 1 Hemophilia Research Representative Hande ÖZONAN * Research Representatives İlgen ŞAŞMAZ Canan ALBAYRAK	10:45-11:00	Coffee Break
11:15-12:00	INDUSTRY SESSION-2 TAKEDA The Significance of Factor Therapy in the Management of Hemophilia A Moderators: Bülent ZÜLFİKAR, Kaan KAVAKLI Speakers: * Factor VIII’ Matters Carmen ESCURIOLA * Should Prophylaxis be Individualized? Elif Gülsüm ÜMİT	12:30-14:00	Lunch	11:00-12:30	Session Chairs: Hülya BİNGÖL, Bülent ALİOĞLU 11:00 - 11:30 Care Algorithm in Hemophilia Cases Selmin ŞENOL 11:30 - 12:00 Intravenous Factor Injection in Hemophilia. Gains and Undesired Situations Uz. Hem. Hülya BİNGÖL 12:00 - 12:30 Subcutaneous Injection in Hemophilia. Gains and Undesired Situations Uz. Hem. Hayriye BAŞER
12:00-12:30	CONFERENCE GENE THERAPY IN HEMOPHILIA Session Chairs: Bülent ANTMEN, Tahir ATİK Speaker: Wolfgang MIESBACH		GÜNGÖR NİŞLİ - MULTIDISCIPLINAR	12:30-14:00	Lunch
12:30-14:00	Lunch	14:00-15:00	PANEL 1 GLOBAL APPROACH TO HEMOPHILIA DISORDER AND THE SITUATION IN TURKEY Session Chairs: Fikret BEZGAL, Oğuzhan PETEKÇİ Speakers: * Successful Practices Cesar GARRIDO * Situation in Turkey Mehmet Can UĞUR * Inhibitor Issue Ekrem ÜNAL	14:00 - 16:30	Session Chairs: Emine BUCAK, Ahmet KOÇ 14:00 - 14:30 Inhibitor Issue in Hemophilia and Managing Steps Emine TÜRKAN 14:30 - 15:00 Empowerment Steps for Hemophilia Families During Childhood and Adolescence (Self-care, Vaccination, Family Dynamics, School Life…) Hem. Emine BUCAK 15:00 - 15:30 Hemophilia as a Genetic Disease and Pedigree Chart Formation Ergül BERBER 15:30 - 16:00 Importance of Regular Movement and Exercise Canan ATAY 16:00- 16:30 Approach to Bleeding Woman on vWD Basis Kamuran KARAMAN
14:00-14:45	INDUSTRY SESSION-3 KEDRİON Experience and Value of pdFVIII/pdFIX Moderator: Flora Peyvandi Speakers: Experience in Adults: Known and Unknown Aspects of pdFVIII/ pdFIX Cem AR Experience in pediatrics: Importance and future aspects of pdFVIII/pdFIX Canan ALBAYRAK	15:00-16:00	PANEL 2 ADOLESCENCE AND EARLY ADULTHOOD PERIOD Session Chairs: Yasemin TORUN, Irmak GÜMÜŞTAŞ WHAT AWAITS US IN ADOLESCENCE? Speakers: * From Hematological Perspective Serap KARAMAN * From Developmental and Endocrinological Perspective Melek YILDIZ * From Economic and Social Perspective Haluk ZÜLFİKAR	16:00-16:30	Coffee Break
14:45-15:45	PANEL 4 MUSCULO-SKELETAL HEALTH Session Chairs: Semih AYDOĞDU, Cüneyt TÜRKMEN Speakers: * Ultrasonography and Joint Scoring in Hemophilia Carlo MARTINOLI * Joint Health and Kinesiology M. Necati TAT * Synovectomy in Joint Disorders Başak KOÇ	16:00 - 16:30	Coffee Break	16:30-17:00	Session Chair: Defne TUNCER Clinical Research and Legislation Selmin ŞENOL Funda CİGA
15:45-16:15	Coffee Break	16:30-17:30	PANEL 3 NEW THERAPIES "Gene Therapy Non-replacement Products Next Generation EHL Factors Mimetic Drugs" Moderators: Bülent ZÜLFİKAR, Kaan KAVAKLI Discussants: Alphan KÜPESİZ Bülent ANTMEN Nazan SARPER Başak KOÇ Canan ALBAYRAK Fahri ŞAHİN Vahap OKAN	17:00-17:15	Evaluation and Distribution of Participation Certificates, Closing
16:15-17:00	INDUSTRY SESSION-4 NOVO NORDİSK Legacy for the Future 20 years with NovoSeven filled with power and trust Panelists: Stephanie SEREMETIS Bülent ZÜLFİKAR Kaan KAVAKLI Bülent ANTMEN	17:30 - 18:00	CONFERENCE 1 SAFETY IN TREATMENT Session Chairs: Yusuf Ziya ARAL, Fatma BALİ Speaker: Can BALKAN
17:00-18:15	ORAL PRESENTATIONS SESSION- 1 Session Chairs: Robert KLAMROTH, Alphan KÜPESİZ

TIME	MEDICAL HALL	TIME	GÜNGÖR NİŞLİ - MULTIDISCIPLINARY HALL	TIME	MUSCULOSKELETAL SYMPOSIUM
09:00-10:00	PANEL 5 von WILLEBRAND DISORDERS Session Chairs: Wolfgang MIESBACH, Sinan AKBAYRAM Speakers: * New VWD Diagnosis and Treatment Guideline Flora PEYVANDI * VWD Arthroplasty Implementation Hakan KOCAOĞLU	09:30 - 10:00	CONFERENCE 2 ORAL AND DENTAL HEALTH Session Chair: Cem DOĞAN Speaker: Gülsüm AK	09:00-10:30	ARTHROPATIES OTHER THAN THE KNEE Chairs: Semih AYDOĞDU, Gökhan POLAT Speakers: * Elbow Joint Önder KILIÇOĞLU * Ankle Joint Elcil KAYA BİÇER Hip Joint Bülent ATİLLA*
10:00-10:45	INDUSTRY SESSION-5 CSL BEHRİNG Concerns in vWD: with Country and World Data Speakers: Bülent ZÜLFİKAR Kaan KAVAKLI Fahri ŞAHİN Can BALKAN Selin AYTAÇ	10:00-11:00	PANEL 4 ROLE OF THE PARENTS Session Chairs: Gökhan AKTAÇ, Aylin ARIK Speakers: * Related to Treatment (Clinical and Surgical Treatment) Murat SÖKER * Related to Sports and Social Life Bülent BAYRAKTAR * Related to School and Business Life Elif KAZANCI Hüseyin ÖZTÜRK	10:30-11:00	Coffee Break
10:45-11:15	Coffee Break	11:00-11:30	CONFERENCE 3 BUROCRACY AND LEGISLATION Session Chairs: Yusuf BÜYÜKPINARBAŞILI, Mustafa AKYOL Speaker: Tuncay ALKAN	11:00-12:30	MUSCULOSKELETAL PHYSIOTHERAPY Chairs: Kazım ÇAPACI, Ela TARAKÇI Speakers: Filiz CAN Merve TAT Demet ŞENOL Sercan ÜNAL
11:15-12:00	INDUSTRY SESSION-6 PFIZER PATIENT SATISFACTION Moderator: Kaan KAVAKLI Speaker: Bülent ZÜLFİKAR	11:30-12:00	Coffee Break	12:30-14:00	Lunch
12:00-12:30	CONFERENCE OPPORTUNITIES AND THREATS IN GENE THERAPY TO HEMOPHILIA Brian O’MAHONEY Session Chairs: Ergül BERBER, Ayln CANPOLAT	12:00-13:00	PANEL 5 HEMOPHILIA NURSING Moderators: Selmin ŞENOL, Can ACIPAYAM Speakers: Fadime FİŞEK Hülya BİNGÖL Emine BUCAK Rüçhan YÖNEY	14:00-15:30	MUSCULOSKELETAL RADIOLOGY - 1 * Hemophilia and Ultrasonography Carlo MARTINOLI
12:30-14:00	Lunch	13:00-14:30	Lunch	15:30-16:00	Coffee Break
14:00-15:00	PANEL 6 NEW THERAPIES IN HEMOPHILIA Session Chairs: Hale ÖREN, Tiraje CELKAN Speakers: * Non-replacement Drugs Victor JIMENEZ-YUSTE * Next Generation EHL Factors Robert KLAMROTH	14:30-15:30	PANEL 6 BEING A CARRIER IN GENETIC BLEEDING DISORDERS "Role of NGOs in Determination and Significance of Genetic Legacy, Meeting of Expectations on Starting a Family and Having Children" ROUND TABLE SESSION Moderators: Sema OVALI, Cazibe PEKEŞ Discussants: Tahir ATİK Ergül BERBER Melike TEKİNEL Caner DADAK	16:00-17:30	MUSCULOSKELETAL RADIOLOGY - 2 Chairs: İpek TAMSEL, Gülen TÜYSÜZ * X-Ray Graphy and MR Imaging Istanbul Experience - TBA * Ultrasonography and Scoring Aegean Experience - İpek TAMSEL
15:00 - 16:00	PANEL 7 OTHER FACTOR DEFICIENCIES AND THEIR SIGNIFICANCE Session Chairs: Ahmet Faik ÖNER, Erol ERDURAN Speakers: * Fibrinogen Deficiency Selin AYTAÇ * Platelet Function Disorders Mustafa Yusuf KÖKER * AT, TFPI, PC Deficiency and Its Significance Ayşegül ÜNÜVAR	15:30-16:30	PANEL 7 COVID 19 PANDEMIC AND NGOS Session Chairs: Duran CANATAN, Mehmet DAĞLI Speakers: * Patient Experience that Encountered COVID-19 Problem Burak KİRAZ Serhat KAYA * Data on Turkey Dilek GÜRLEK GÖKÇEBAY * Expected Solutions (Drugs, Vaccines, Supportive Therapies) Recep ÖZTÜRK
16:00 - 16:30	Coffee Break	16:30-17:00	Coffee Break
16:30-17:15	INDUSTRY SESSION-7 ROCHE TAKING THE PULSE OF CONGRESS! HEMLIBRA with recent updates & Turkey experience An Open Session with Four Different HTCs İstanbul Bülent Zülfikar Başak Koç Şenol İzmir Kaan Kavaklı Can Balkan *Adana Bülent Antmen İlgen Şaşmaz Samsun Canan Albayrak	17:00-18:00	PANEL 8 ALIGNMENT BETWEEN TREATMENT AND FOLLOW-UP - RELATİON TO QUALITY OF LIFE Session Chairs: İsmail Hakkı BALMUMCU, Ali Ekber DAĞHAN Speakers: * Harmony with The Changing World Göksel LEBLEBİSATAN * Leading a Life of Quality Irmak GÜMÜŞTAŞ * Compliance with Treatment and its Contribution to a Healthy Life Zuhal DEMİRCİ
17:15-18:30	ORAL PRESENTATIONS SESSION- 2 Session Chairs: Emine ZENGİN Aydan AKDENİZ

TIME	MEDICAL HALL
08:30 - 09:00	RATIONAL DRUG HEMOPHILIA PHARMACY Session Chair: Hüseyin TOKGÖZ Speaker: Barış YILMAZ
09:00-10:00	PANEL 8 SUPPORTIVE TREATMENT IN BLEEDING DISORDERS Session Chairs: Saadet AKARSU, Nil GÜLER Speakers: * Analgesic, Anti-inflammatory Therapies Gül TALU * Psycho-social support Sylvia von MACKESSEN
10:00-11:00	PANEL 9 NEW POSSIBILITIES IN BLEEDING DISORDERS Session Chairs: Adalet MERAL, Haluk ZÜLFİKAR * The new work formula Medical Group- Social Leaders. Cesar GARRIDO * The importance of using Health Technology Assessment Declan NOONE * Factor Production Process in Turkey President of Turkish Red Crescent Society Kerem KINIK
11:00-12:30	HEMOPHILIA FORUM

COURSES PROGRAM

Under Construction

REGISTRATION & ACCOMMODATION

PHYSIAL REGISTRATION INFORMATION

Limak Cyprus Deluxe Hotel, Cyprus	Before June 19, 2021	After June 19, 2021
Doctor, Nurse, Exhibitor Registration + 3 Nights accommodation in Single Room + Transportation	14.000 TL	16.000 TL
Doctor, Nurse, Exhibitor Registration + 3 Nights accommodation in Double Room + Transportation	16.000 TL	18.000 TL
Doctor, Nurse, Exhibitor Only Registration	4.000 TL	5.000 TL
Patient and Patient Relative Only Registration (Please contact Topkon Tourism for your accommodation requests)	300 TL	300 TL
Registration + 3 Nights accommodation in Single Room + Transportation	10.000 TL	10.000 TL
Registration + 3 Nights accommodation in Single Room	7.000 TL	7.000 TL

VAT is not included in the registration accommodation package prices. VAT rate is 18%.
Fees do not include accommodation VAT (%1)
It is mandatory for specialists, assistants, nurses, and company representatives to register for participation in congress general areas and scientific meetings. Participation in scientific activities, name badge, name badge program, participation certificate, and congress bag is included in registration prices.
Accommodation prices are for 3 nights and include 19 September check-in, 22 September check-out.
Topkon Congress Services reserves its right to reflect possible tax, fees, charging changes on prices.
We kindly request you to contact us regarding earlies check-in and latest check-out demands within the scope of congress dates.

ONLINE REGISTRATION INFORMATION

	Price
Doctor, Nurse, Exhibitor	4.000 TL

Access to the online scientific program on 19-22 September 2021,
Opportunity to obtain a congress participation certificate,
TTB Credit facility,
Possibility to access the presentations allowed by the speakers

BANK ACCOUNT DETAILS

Account Name:	TOPKON TURİSTİK HİZ. YAT. İNŞ. VE TİC. LTD.ŞTİ.
The Bank Name:	İŞ BANKASI
Branch Code:	1394
SWIFT:	ISBKTRIS
TL IBAN Number:	TR26 0006 4000 0011 3940 0080 09

Abstract Submissons

Abstract Summary Rules

Summaries of all accepted abstracts will be published in congress book.
Authors who will present a abstract have to register as participants.
Assessment Board will decide abstract presentation form (oral presentation or poster).
Abstract should include; purpose of study, methods, findings, and results.
Abstract summary should be send in Turkish or English.
Text should be one paragraph. Once image and two tables can be added.
Standard abbreviations are accepted. If there are abbreviations in summary, its full form should be written within parenthesis where it is used for the first time.
Abstract summaries should include the name, surname, and organizations of the authors and the presenter.
Since congress registrations are under one name, it does not include other names in the Abstract summary.
Abstract summary delivery deadline is August 15, 2021.

Feedback
Information on whether the paper summary has been accepted will be sent with e-mail.
You may contact with Topkon Congress Services (hemofili2021@topkon.com)

General Information

CONGRESS DATES
September 19 – 22, 2021

CERTIFICATE OF PARTICIPATION
Participation documents for all scientific program participants will be given from the registration desk.

INVITATION LETTER / PERMISSION
Invitation letters that will be requested to be given to the institutions for participation in the congress will be sent to the participants who want to participate through the congress secretariat. Such invitation letters can only be used for permission purposes. Registration and accommodation fees of the guests who have invitation letters belong to them.