Evangelia Vlachodimtropoulou Koumoutsea, MBBS, PhD, FRCSC¹, A. Kinga Malinowski, MD, MSc, FRCSC², Eric Kaplovic, MD^3*, Ravnit Lomash, BDS^4*, Kellie Murphy, MD, MSc^5* and Nadine Shehata, MD, FRCPC, MSc¹

¹Mount Sinai Hospital, Toronto, ON, Canada
²Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Mt. Sinai Hospital, Toronto, ON, CAN
³Hematology, Mount Sinai Hospital, Toronto, Canada
⁴Mount Sinai Hospital, Toronto, Canada
⁵Mount Sinai Hospital, Toronto, ON, CAN

Ioannis Farmakis^1*, Mary Cushman, MD², Luca Valerio^3*, Nikolaos Giannakoulas^4*, Lukas Hobohm^3*, Gregory Piazza^5*, Stavros Konstantinides^6* and Stefano Barco, MD, PhD, FESC^7*

¹University Medical Center of the Johannes Gutenberg University, Mainz, AL, Germany
²Larner College of Medicine at the University of Vermont, Colchester, VT
³University Medical Center of the Johannes Gutenberg University, Mainz, Germany
⁴Aristotle University of Thessaloniki, Thessaloniki, Greece
⁵Brigham and Women's Hospital, Boston, MA
⁶University Medical Center Mainz, Mainz, Germany
⁷Department of Angiology, University Hospital Zurich, Zurich, Switzerland

Varun Iyengar, MD¹, Rushad Patell, MBBS², Siyang Ren, MS^3*, Sirui Ma, MD¹, Amanda Pinson^2*, Amelia Barnett^1*, Pavania Elavalakanar, MSc, BSc^4*, Donna S. Neuberg, ScD³ and Jeffrey I. Zwicker, MD²

¹Department of Medicine, Beth Israel Deaconess Medical Center, Brookline, MA
²Division of Hematology and Hematologic Malignancies, Beth Israel Deaconess Medical Center, Boston, MA
³Department of Data Science, Dana-Farber Cancer Institute, Boston, MA
⁴Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA

Christina Crossette-Thambiah, MBBS, MRCP^1,2*, Indika Rajakaruna^3*, Zain Odho^4*, Andrew Doyle, MBBS, BSc, FRPATH^5*, Karen Breen, MD^6*, Michael Laffan, MD-PhD^1,2 and Deepa Jayakody Arachchillage, MD, MRCP, FRCPath^1,2*

¹Imperial College London, London, United Kingdom
²Imperial College Healthcare NHS Trust, London, United Kingdom
³University of East London, London, GBR
⁴The Royal Brompton Hospital, London, United Kingdom
⁵Guy's & St Thomas' NHS Foundation Trust, London, United Kingdom
⁶Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom

Hope P. Wilson, MD¹, Brian Branchford, MD^2*, Julie Jaffray, MD, MS³, Emily Krava, MPH^4*, Amy Stillings, BS^4*, Jeffrey D. Lebensburger, DO¹ and Neil Goldenberg, MD, PhD⁵

¹Division of Pediatric Hematology Oncology, The University of Alabama at Birmingham, Birmingham, AL
²Bloodcenter of Wisconsin, Menomonee Falls, WI
³University of California San Diego/Rady Children's Hospital, San Diego, CA
⁴Children's Hospital Los Angeles, Los Angeles, CA
⁵All Children's Hospital Johns Hopkins Medicine, Saint Petersburg, FL

Ravindra Sarode, MD¹, Joshua N. Goldstein, MD, PhD^2*, Gregory Simonian, MD^3* and Truman J. Milling Jr, MD^4*

¹UT Southwestern Medical Center, Dallas, TX
²Massachusetts General Hospital, Harvard Medical School, Boston, MA
³Divison of Vascular Surgery, Heart and Vascular Hospital, Hackensack University Medical Center, Hackensack, NJ
⁴University of Texas at Austin, Seton Dell Medical School Stroke Institute, Austin, TX