Join us at the KSUM 2021 HYBRID CONGRESS from 13th to 14th May, 2021 *The program is subject to change. Date Day 1 - May 13 (Thu) Day 2 - May 14 (Fri) Time/ Room Room 1 Room 2 Room 3 Room 4 Room 5 Room 1 Room 2 Room 3 Room 4 Room 5 09:00 THY MSK ABD PED PHY ABD BR THY GU CV Special Focus Special Focus Session 5 Meet the 09:30 Session 1 Professor 4 Categorical Categorical Categorical - Axillary Special Focus Hot Issue 1 Course 1 Course 2 Course 3 - Recent Scientific Imaging and Meet the GU Session 6 - Everything Research Treatment: - Neck LN and - US of Soft - Pediatric GU Session 2 Professor 3 - Carotid 10:00 about IPMN Topics in Towary Doppler US Tissue Imaging Ultrasonography Ultrasound Minimally Scientific Imaging Invasive Session 3 Surgery 10:30 Coffee Break Coffee Break 10:50 ABD BR THY PED CV Categorical Meet the Meet the Course 8 Professor 6 Professor 5 Jisan Lecture - How to Do Scientific - Advanced Meet the - Axillary US for the Session 4 Neuro Professor 7 Ultrasound for Abdominal Ultrasonography Nodal Staging Organs in Neonates 12:00
Break Break
12:30
Sponsored Sponsored KSUM Sponsored Sponsored Sponsored 13:00 Symposium Symposium General Symposium Symposium Symposium 1 2 Assembly 3 4 5
13:30 THY KSTU ABD BR THY PED
Hot Issue 3 14:00 Hot Issue 2 Young Categorical Special Focus - Active Special Focus - Radiogenomics Multisession 2 Ultrasound, Investigator Ultrasonography Course 4 Session 7 Surveillance Session 2 with - Pediatric the Best Award 2021 Editorial - Neurologic - More than of Thyroid - Thyroid RFA Ultrasound Liver Session Workshop Application of Gray Scale US Cancer vs to Date for Prediction Transplantation (Korean) FUS in the Liver Nonthyroidal Medicine Cancer
15:00 Coffee Break Coffee Break 15:20 BR MSK ABD GU KSTU Categorical Special Focus Course 5 Categorical Categorical Session 3 - Breast Cancer Multisession 1 Course 6 Course 7 Management - Clinical - US of Arthritis - Liver Focal - Emergency Interactive Case Review from Potentials of Lesion GU USG Multidisciplinary FUS Perspective 16:30 Break 16:40 BR MSK ABD GU OTHERS 16:50
Meet the Special Focus Scientific Professor 1 Meet the Session 4 Reimbursement Session 1 - US around Professor 2 - Gynecologic of Ultrasound Hip USG in Korea (Korean) 17:50
*All sessions will be conducted in English except for those marked as "Korean Session." ABD - Abdomen BR - Breast CV - Cardiovascular GU - Genitourinary MSK - Musculoskeletal PED - Pediatric PHY - Physics THY - Thyroid - Korean Session KSTU - The Korean Society for Therapeutic Ultrasound
02 KSUM 2021 KSUM 2021 HYBRID CONGRESS NOT JUST THE FUTURE, IT’S THE PRESENT
All participants will be able to attend the congress via live streaming and other interesting features of our online congress. We are working on creating a new experience for all of you to deepen your knowledge and know-how.
Exceptional Innovative Greater value Live Invited opportunity program experience connection lectures
to share state-of- that is even more that saves your time between all by world - the-art knowledge engaging for and money attendees in renowned experts beyond a physical attendees different locations on various fields of onsite congress Ultrasound
KSUM 2021 Convenient, Easy, Accessible to All!
Online Congress website will be opened in May! 1. Visit the above URL on your device and check out the program. 2. Live streaming of all sessions. 3. Innovative Exhibition from sponsors and technical exhibitors.
52nd Annual Congress of the Korean Society of Ultrasound in Medicine 03 CALL FOR ABSTRACTS & AWARDS
CALL FOR ABSTRACTS - All abstracts must be submitted through the congress website (http://2021.ksum.or.kr). - The deadline for the submission of abstracts is 24:00, March 22 (Mon), 2021 (Korean Time). - Abstracts should be typed in English, and should not exceed 300 words in length. - Abstract acceptances will be notified by 24:00, April 5 (Mon), 2021 (Korean Time). - The final version of your poster including texts, images, etc. should be uploaded electronically to the KSUM 2021 website within 10~15 days after the acceptance notice. Please visit the KSUM 2021 website for exact deadlines and regulations. Abstract Classification ▶ Oral ▶ Poster ▶ Case Report (Poster or Ultrasound, the Best) Abstract Topics for Oral and Poster Presentations ▶ Abdomen ▶ Breast ▶ Cardiovascular ▶ Genitourinary ▶ Head & Neck ▶ Musculoskeletal ▶ Pediatric ▶ Physics ▶ Thyroid
KSUM 2021 AWARDS Presenter Award - Awarded to all accepted presenters for the Scientific Session (Oral), Scientific Exhibition (E-poster) and Informal Scientific Presentation_Ultrasound, the Best. - The award is given only once to the presenting author regardless of the number of accepted abstracts or co-authors. Category 1 Category 2 Awards Scientific Session (Oral) For International Presenters Scientific Exhibition (E-poster) Full refund of the registration fee Informal Scientific Presentation_Ultrasound, the Best Scientific Session (Oral) Full refund of the registration fee For Domestic Presenters Scientific Exhibition (E-poster) 50% discount on the registration fee Informal Scientific Presentation_Ultrasound, the Best
Young Investigator Award - Awarded to presenters under the age of 40 of the abstracts selected as most outstanding for oral presentations. Grand Prix (1 Winner) Gold (2 Winners) KRW 500,000 / USD 500 KRW 300,000 / USD 300
Ultrasound, the Best Award - Awarded to the top International Scientific Presentation presenters based on peer reviews of the presentations’ scientific content. Ultrasound, the Best Award (3 Winners) KRW 100,000 / USD 100
Best Poster Award - Awarded to primary authors of selected scientific exhibitions based on peer reviews of the presentations’ scientific content. Grand Prix (1 Winner) Gold (2 Winners) Silver (3 Winners) Bronze (4 Winners) KRW 500,000 / USD 500 KRW 300,000 / USD 300 KRW 200,000 / USD 200 KRW 100,000 / USD 100
* Please be informed that the prizes of all awards will be presented after deducting 22% tax from the original amount in the case of awardees from the following countries: Afghanistan, Argentina, Belgium, Brazil, Cameroon, Colombia, Costa Rica, Denmark, Georgia, Guatemala, Hong Kong, Kenya, Lebanon, Mozambique, Paraguay, Peru, Puerto Rico, Republic of Suriname, Serbia, Singapore, Sudan, Switzerland, Taiwan, Turkey, Uruguay.
04 KSUM 2021 KSUM 2021 DAILY PROGRAM
May 13 (Thu)
09:00-10:30 Categorical Course 1 (THY) Neck LN and Doppler US Room 1 Chairperson(s) Jeong Hyun Lee (Korea), Jin Young Kwak (Korea) 09:00-09:20 Imaging-based Nodal Classification : US and CT Sae Rom Chung (Korea) 09:20-09:40 Pitfalls and Mimics of Neck Lymph Node on Imaging Hyun Kyung Lim (Korea) 09:40-10:00 Nodal Staging and Surgical Extent Hye Shin Ahn (Korea) 10:00-10:20 Doppler US Guidelines for Thyroid Disease Jin Chung (Korea) 10:20-10:30 Q&A
09:00-10:30 Categorical Course 2 (MSK) US of Soft Tissue Room 2 Chairperson(s) Sang-Hee Choi (Korea), Ji Young Hwang (Korea) 09:00-09:20 US of Muscle Pathology Hee Dong Chae (Korea) 09:20-09:40 US of Nerve Pathology In Sook Lee (Korea) 09:40-10:00 US of Soft Tissue Mass Sang Yoon Kim (Korea) 10:00-10:20 US for Soft Tissue Biopsy Young Han Lee (Korea) 10:20-10:30 Q&A
09:00-10:30 Hot Issue 1 (ABD) Everything about IPMN Room 3 Chairperson(s) Joon Koo Han (Korea), Seong Hyun Kim (Korea) 09:00-09:30 Role of TAUS in IPMN Jung Hoon Kim (Korea) 09:30-10:00 Pathologic Features of IPMN Seung-Mo Hong (Korea) 10:00-10:30 Role of EUS in IPMN Sang Hyub Lee (Korea)
09:00-10:30 Categorical Course 3 (PED) Pediatric GU Imaging Room 4 Chairperson(s) Myung-joon Kim (Korea), Yong-Woo Kim (Korea) 09:00-09:25 Congenital GU Anomalies Haesung Yoon (Korea) 09:25-09:50 GU Infection and Inflammation Ji Eun Park (Korea) 09:50-10:15 Pediatric GU Tumors Young Jin Ryu (Korea) 10:15-10:30 Q&A
09:00-10:30 Special Focus Session 1 (PHY) Recent Research Topics in Ultrasound Imaging Room 5 Chairperson(s) Dongguk Paeng (Korea), Yangmo Yoo (Korea) 09:00-09:30 Ultrasound and Photoacoustic Imaging with Phase-change Nanodroplets Heechul Yoon (Korea) 09:30-10:00 Can Ultrasound Help Increase Optical Imaging and Treatment Depth? Jinho Chang (Korea) 10:00-10:30 The Unexpected Effectiveness of Nanobubbles as Ultrasound Contrast Agents Michael C. Kolios (Canada)
10:30-10:50 Coffee Break
52nd Annual Congress of the Korean Society of Ultrasound in Medicine 05 10:50-12:00 Jisan Lecture (Jisan) ALL Chairperson(s) Won Jae Lee (Korea) 10:50-10:55 Introduction Gastrointestinal Ultrasound: State of the Art 10:55-11:35 Christoph F. Dietrich( Germany) (“Never Seen Before and We Might Never See it Again”) 11:35:11:55 Q&A 11:55-12:00 Ceremony for Letter of Appreciation & Photo
12:00-12:30 Break
12:30-13:30 Sponsored Symposium Room 1-2
12:30-13:30 KSUM General Assembly Room 3
13:30-15:00 Special Focus Session 2 (THY) Thyroid RFA to Date Room 1 Chairperson(s) So Lyung Jung (Korea), Jung Hee Shin (Korea) 13:30-13:50 RFA of Autonomously Functioning Thyroid Nodules Jin Yong Sung (Korea) 13:50-14:10 Long-term Follow-up of Benign Thyroid Nodules after RFA Soo Yeon Hahn (Korea) 14:10-14:30 RFA of Papillary Microcarcinoma Jung Hwan Baek (Korea) 14:30-14:50 RFA of Thyroid Nodules in Private Clinics Jung Suk Sim (Korea) 14:50-15:00 Q&A
13:30-15:00 Ultrasound, the Best Room 2
13:30-15:00 Young Investigator Award 2021 Session Room 3
13:30-15:00 Ultrasonography Editorial Workshop (Korean) Room 4
13:30-15:00 Categorical Course 4 (KSTU) Neurologic Application of FUS Room 5 Chairperson(s) Hyungmin Kim (Korea), Won Seok Chang (Korea) 13:30-14:00 TBD Seung-Schik Yoo (USA) 14:00-14:20 TBD Jeong-Ho Seok (Korea) 14:20-14:40 TBD Juyoung Park (Korea) 14:40-15:00 TBD Won Seok Chang (Korea)
15:00-15:20 Coffee Break
15:20-16:30 Categorical Course 5 (BR) Breast Cancer Management from Multidisciplinary Perspective Room 1 Chairperson(s) Boo-Kyung Han (Korea), Hee Jung Shin (Korea) 15:20-15:40 TBD Jae Ho Jeong (Korea) 15:40-16:00 TBD Na Lae Eun (Korea) 16:00-16:20 Assessment of Pathological Response to Neoadjuvant Chemotherapy in Breast Cancer Eunah Shin (Korea) 16:20-16:30 Q&A
06 KSUM 2021 15:20-16:30 Multisession 1 (MSK) US of Arthritis Room 2 Chairperson(s) Doo Hoe Ha (Korea), Jang-Gyu Cha (Korea) 15:20-15:40 US in Arthritides Seunghun Lee (Korea) 15:40-16:00 US of Gouty Athritis Eun Hae Park (Korea) 16:00-16:30 Oral Presentations
15:20-16:30 Categorical Course 6 (ABD) Liver Focal Lesion Room 3 Chairperson(s) Pyo Nyun Kim(Korea), Chul Soon Choi (Korea) 15:20-15:40 Us for Evaluating Liver Focal Lesion Yong Eun Chung (Korea) 15:40-16:00 Case-based Review: Benign Focal Lesion Young Seo Cho (Korea) 16:00-16:20 Case-based Review: Malignant Focal Lesion In Young Choi (Korea) 16:20-16:30 Q&A
15:20-16:30 Categorical Course 7 (GU) Emergency GU USG Room 4 Chairperson(s) Bum Sang Cho (Korea), See Hyung Kim (Korea) 15:20-15:40 US for Acute Flank Pain Myoungseok Lee (Korea) 15:40-16:00 US for Acute Scrotal Pain Weon Jang (Korea) 16:00-16:20 US for Emergency Obstetric US T.L.N. Praveen (India) 16:20-16:30 Q&A
15:20-16:30 Special Focus Session 3 (KSTU) Clinical Potentials of FUS Room 5 Chairperson(s) Min Joo Choi (Korea), Hak Jong Lee (Korea) 15:20-15:40 Sonophoresis with Liquid Phase Core Cavitation Seed Jongbum Seo (Korea) 15:40-16:00 Clinical Experience of FUS in Gynecologic Disease Young-sun Kim (Korea) 16:00-16:20 FUS and Pancreatic Tumor: Clinical Potential Jae Young Lee (Korea) 16:20-16:30 Q&A
16:30-16:40 Coffee Break
16:40-17:50 Scientific Session 1 (BR) Room 1 Chairperson(s) Eun Ju Son (Korea), Young Mi Park (Korea) 16:40-17:50 Oral Presentations
16:40-17:50 Meet the Professor 1 (MSK) US around Hip Room 2 Chairperson(s) Jung-Ah Choi (Korea), Sun Joo Lee (Korea) 16:40-17:00 Ultrasound of Hip Pathology Grainger Andrew (UK) 17:00-17:20 Ultrasound of the Greater Trochanter and Surrounding Tissues Grainger Andrew (UK) 17:20-17:50 Q&A
16:40-17:50 Meet the Professor 2 (ABD) Room 3 Chairperson(s) Hyunchul Rhim (Korea) 16:40-17:25 TBD Fuminori Moriyasu (Japan) 17:25-17:50 Q&A
52nd Annual Congress of the Korean Society of Ultrasound in Medicine 07 16:40-17:50 Special Focus Session 4 (GU) Gynecologic USG Room 4 Chairperson(s) Seong Kuk Yoon (Korea), Young Taik Oh (Korea) 16:40-17:00 US for Uterus and Endometrium: A Wrap-up and Updates Jung Jae Park (Korea) 17:00-17:20 O-RADS and its Clinical Application Young Joon Lee (Korea) 17:20-17:40 Intervention of Uterine Myoma / Adenomysis: HIFU and Other Modalities Young-sun Kim (Korea) 17:40-17:50 Q&A
16:40-17:50 Reimbursement of Ultrasound in Korea (OTHERS) Room 5 Chairperson(s) Dal Mo Yang (Korea), Bong Joo Kang (Korea) 16:40-17:10 초음파 급여화 진행 상황 및 상복부 초음파 Joon-Il Choi (Korea) 17:10-17:30 비뇨생식기 초음파 Young Sup Shim (Korea) 17:30-17:50 유방 초음파 Seon-Hyeong Choi (Korea)
May 14 (Fri)
09:00-10:30 Scientific Session 2 (ABD) Room 1 Chairperson(s) Chang-Hee Lee (Korea), Kyung Sook Shin (Korea) 09:00-10:30 Oral Presenations
09:00-10:30 Special Focus Session 5 (BR) Axillary Imaging and Treatment: Towary Minimally Invasive Surgery Room 2 Chairperson(s) Sun Mi Kim (Korea), Min Jung Kim (Korea) 09:00-09:30 Current Status and Future Perspective of Axillary Management in Minimal Invasive Surgery Jeeyeon Lee (Korea) 09:30-10:00 Prediction of Axillary Nodal Burden with Ultrasound Hye Shin Ahn (Korea) 10:00-10:30 Preoperative Node Localization: Experience with Activated Charcoal and Clip Hye Jung Kim (Korea)
09:00-10:30 Meet the Professor 3 (THY) Room 3 Chairperson(s) Ji-hoon Kim (Korea) 09:00-10:00 Thyroid RFA in the United States Jennifer H. Kuo (USA) 10:00-10:30 Asian Thyroid RFA by Korean and ACTA guidelines Eun Ju Ha (Korea)
09:00-09:40 Meet the Professor 4 (GU) Room 4 Chairperson(s) Sung Bin Park (Korea) 09:00-09:30 USG Guided Biopsy in Genitourinary Radiology Sung Yoon Park (Korea) 09:30-09:40 Q&A
09:40-10:30 Scientific Session 3 (GU) Room 4 Chairperson(s) Sung Bin Park (Korea), TBD (Korea) 09:40-10:30 Oral Presentations
09:00-10:30 Special Focus Session 6 (CV) Carotid Ultrasonography Room 5 Chairperson(s) Bae Young Lee (Korea), Heon Lee (Korea) 09:00-09:25 Clinical Perspective of Carotid Imaging Focused on Ultrasonography Sanghyuk Im ( Korea) 09:25-09:30 Q&A 09:30-09:55 Principles and Tips of Carotid Ultrasonography Eun-Ah Park( Korea) 09:55-10:00 Q&A 10:00-10:25 Evaluation of Vulnerable Plaques: What Is Your Choice? Eun Ju Chun( Korea) 10:25-10:30 Q&A
08 KSUM 2021 10:30-10:50 Coffee Break
10:50-12:00 Categorical Course 8 (ABD) How to Do US for the Abdominal Organs Room 1 Chairperson(s) Won Jae Lee (Korea), Kyung Seung Oh (Korea) 10:50-11:10 GB Sun Kyung Jeon (Korea) 11:10-11:30 Pancreas Jisun Lee (Korea) 11:30-11:50 Rectum Young Min Jeon (Korea) 11:50-12:00 Q&A
10:50-12:00 Meet the Professor 5 (BR) Axillary Ultrasound for Staging Room 2 Chairperson(s) Jung Min Chang (Korea) 10:50-11:30 Axillary Ultrasound for Nodal Staging Gary Whitman (USA) 11:30-12:00 Q&A
10:50-12:00 Scientific Session 4 (THY) Room 3 Chairperson(s) Joon Hyung Lee (Korea), Yoonjung Choi (Korea) 10:50-12:00 Oral Presenations
10:50-12:00 Meet the Professor 6 (PED) Advanced Neuro Ultrasonography in Neonates Room 4 Chairperson(s) Ji Hye Kim (Korea), Hye-Kyung Yoon (Korea) 10:50-11:15 Neonatal Brain CEUS Misun Hwang (USA) 11:15-11:40 Neonatal Brain SWE Misun Hwang (USA) 11:40-12:00 Q&A
10:50-12:00 Meet the Professor 7 (CV) Room 5 Chairperson(s) Whal Lee (Korea), Sang Il Choi (Korea) 10:50-11:50 Cutting Edge of Carotid US Vasileios Rafailidis( Greece) 11:50-12:00 Q&A
12:00-12:30 Break
12:30-13:30 Sponsored Symposium Room 1-3
13:30-15:00 Special Focus Session 7 (ABD) More than Gray Scale US in the Liver Room 1 Chairperson(s) Yong Moon Shin (Korea), Yong Yeon Jeong (Korea) 13:30-13:50 Doppler US Jin Sil Kim (Korea) 13:50-14:10 Superb Microvascular Imaging Tae Wook Kang (Korea) 14:10-14:30 Elastography Sanghyeok Lim (Korea) 14:30-14:50 Attenuation Imaging Jae Seok Bae (Korea) 14:50-15:00 Q&A
13:30-15:00 Hot Issue 2 (BR) Radiogenomics for Prediction Medicine with Ultrasound Room 2 Chairperson(s) Won Hwa Kim (Korea), Ji Hyun Youk (Korea) 13:30-14:00 US-based Radiomics Analysis: Literature Review and Sharing Experience with US-CAD Young-Seon Kim (Korea) 14:00-14:30 Bioinformatics Analysis of Multi-omics Data in Large Cancer Cohorts Inuk Jung (Korea) 14:30-15:00 Breast Ultrasound Imaging and Radiogenomics Ah Young Park (Korea)
52nd Annual Congress of the Korean Society of Ultrasound in Medicine 09 13:30-15:00 Hot Issue 3 (THY) Active Surveillance of Thyroid Cancer vs Nonthyroidal Cancer Room 3 Chairperson(s) Dong Gyu Na (Korea), Jeong Seon Park (Korea) 13:30-13:55 Active Surveillance of PTMC in Japan Iwao Sugitani (Japan) 13:55-14:00 Q&A 14:00-14:25 Active Surveillance of PTMC in Korea Ji Ye Lee (Korea) 14:25-14:30 Q&A 14:30-14:55 Active Surveillance of Prostate Cancer Sung Yoon Park (Korea) 14:55-15:00 Q&A
13:30-15:00 Multisession 2 (PED) Pediatric Liver Transplantation Room 4 Chairperson(s) Kwanseop Lee (Korea), Young Ah Cho (Korea) 13:30-13:55 Surgical Consideration of Pediatric Liver Transplantation Jung-Man Namgoong (Korea) 13:55-14:20 Imaging of Pediatric Liver Transplantation Young Ah Cho (Korea) 14:20-14:30 Q&A 14:30-15:00 Oral Presenations
15:00-15:20 Coffee Break
15:20-16:50 Interactive Case Review (ICR) ALL Chairperson(s) Seungchul Han (Korea), Inji Chang (Korea)
SPECIAL SCIENTIFIC PROGRAM
Interactive Case Review
DATE & TIME May 14 (Fri), 15:20-16:50 HOW TO PARTICIPATE - Pre-registered participants must form a duo and participate online via Zoom - General participants (that did not register ahead) can participate via the Online Platform
Participants will be asked 25 multiple choice questions asking to choose the correct diagnosis for different cases. All participants will be given a small gift while three finalist. teams will be awarded with prizes. *For Korean participants, only residents are allowed to attend the ICR Session.
Case of the Day
DATE & TIME May 13 (Thur), 7:30 AM ~ May 14 (Fri) 12:00 PM HOW TO PARTICIPATE Online Platform
Participants will be asked 12 multiple choice questions asking to choose the correct diagnosis for different cases. Domestic participants with the most correct answers will gain the opportunity to win a prize, while international participants will get a chance to receive a 50% discount on the registration fee.
To take part in the special scientific programs, registration is needed at the official website (http://2021.ksum.or.kr).
10 KSUM 2021 REGISTRATION
REGISTRATION Registration should be made through the congress website (http://2021.ksum.or.kr). If online registration is not available, please contact the secretariat at [email protected].
Pre-registration Due Date: May 3 (Mon), 2021 Pre-registration Category1 Category2 Onsite Registration (by May 3 (Mon), 2021)
For KSUM International Member USD 50 International KSUM Non-member USD 70 Participants *Join the KSUM International Membership for Free
KSUM Life Member, In order to minimize KRW 50,000 Full Member COVID-19 infection, there will be no onsite For KSUM Full Member KRW 70,000 registration Domestic (Default on the Annual Membership Fee) Participants KSUM Associate Member, Website Member KRW 30,000
KSUM Non-Member KRW 110,000
1. Senior members over 65 will receive a 50% discount on their registration fee. - Please contact the KSUM 2021 secretariat ([email protected]).
2. KSUM Full Member (Korean) with unpaid annual membership fees are required to pay an extra KRW 20,000 on top of the KRW 50,000 Regular Member’s fee.
3. Refund Policy - By May 3 (Mon), 2021: 100% refund (*All refunds will be made after the congress.) - From May 4 (Tue), 2021: No refund
4. To join KSUM Membership or pay membership dues, please visit the KSUM website (http://www.ultrasound.or.kr).
52nd Annual Congress of the Korean Society of Ultrasound in Medicine 11 SPONSORS
Gold Sponsor
Silver Sponsor
Bronze Sponsor
Supporting Organizations
EVENTS
Event 01 Event 02
Stamp Event Lucky Draw
STEP 1. STEP 1. Watch one or more Sponsored Symposium each day Visit each sponsor page (total 20). during the congress. STEP 2. STEP 2. Check the symposium you’ve Accomplish the mission (click the stamp). watched at ‘My page’. STEP 3. STEP 3. Collect all stamps and receive your prize! Play a Roulette and win attractive prizes!
12 KSUM 2021