Macy L. Early, BA¹, A. Kinga Malinowski, MD, MSc, FRCSC², Marissa Solow, MD^3*, Ahizechukwu Eke, MBChB, PhD^4,5*, Nadine Shehata, MD, FRCPC, MSc^6,7,8, Sana Saif Ur Rehman, MD^9*, Kevin H.M. Kuo, MD, MSc, FRCPC^10,11,12 and Lydia H. Pecker, MD¹³

¹Division of Hematology, Department of Medicine, Johns Hopkins Hospital, Baltimore, MD
²Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Mt. Sinai Hospital, Toronto, ON, CAN
³University Health Network, Toronto, ON, Canada
⁴Division of Clinical Pharmacology, Johns Hopkins School of Medicine, Baltimore, MD
⁵Division of Maternal-Fetal Medicine, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD
⁶Department of Medicine, Toronto, Canada
⁷Mount Sinai Hospital, Toronto, ON, Canada
⁸Canadian Blood Services, Toronto, ON, Canada
⁹Division of Hematology, Washington University School of Medicine, Saint Louis, MO
¹⁰Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
¹¹Division of Hematology, Department of Medicine, University of Toronto, Toronto, ON, Canada
¹²Division of Medical Oncology and Hematology, Department of Medicine, University Health Network, Toronto, ON, Canada
¹³Division of Hematology, Department of Medicine, Johns Hopkins Medicine, Baltimore, MD

Keli C Coleman^1*, Kenneth McKinley, MD^2*, Angela Ellison^3*, Amanda M. Brandow, DO, MS⁴, Blake Nielsen, MS^5*, Lawrence Cook, PhD^5*, Elizabeth Alpern, MD, MSCE^6*, Selena Hariharan, MD^7*, Irina Topoz, MD^8*, Morgan Wurtz, MD^9*, Claudia R. Morris, MD^10,11, Andrew D. Campbell, MD¹², Robert Liem, MD¹³, Rachelle Nuss, MD^14*, Charles T. Quinn, MD¹⁵, Alexis A. Thompson, MD, MPH¹⁶, Anthony Villella, MD^9*, Ana Baumann, PhD^17*, Allison A. King, MD, PhD, MPH¹⁸, Warren Frankenberger, PhD^16* and David C Brousseau, MD, MS¹⁹

¹Medical College of Wisconsin and the Children's Research Institute of Children's Wisconsin, Milwaukee, WI
²Children's National Medical Center, Washington, DC
³Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, PA
⁴Pediatric Hematology/Oncology, Medical College of Wisconsin and Children’s Research Institute of the Children’s Hospital of Wisconsin, Milwaukee, WI
⁵University of Utah, Salt Lake City, UT
⁶Lurie Children's Hospital, Chicago, IL
⁷Cincinnati Children's Hospital, Cincinnati, OH
⁸Department of Pediatrics, Children's Colorado, Denver, CO
⁹Nationwide Children's Hospital, Columbus, OH
¹⁰Department of Pediatrics, Emory University School of Medicine, Atlanta, GA
¹¹Childrens Healthcare of Atlanta, Atlanta, GA
¹²Center for Cancer and Blood Disorders, Childrens National Hospital, Washington, DC
¹³Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, IL
¹⁴Center for Cancer and Blood Disorders, University of Colorado Anschutz Medical Campus, Aurora, CO
¹⁵Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Med. Ctr., Cincinnati, OH
¹⁶Children's Hospital of Philadelphia, Philadelphia, PA
¹⁷Washington University School of Medicine, St Louis, MO
¹⁸Pediatric Hematology/Oncology, Washington University School of Medicine, Clayton, MO
¹⁹Department of Pediatrics, Medical College of Wisconsin and the Children's Research Institute at Children's Wisconsin, Milwaukee, WI

Rajani P Brandsen, MD^1*, Roselie MH Diederen, MD PhD^1*, Siham Bakhlakh^2*, Erfan Nur, MD, PhD², Reinier O Schlingemann, MD PhD^1* and Bart J Biemond²

¹Department of Ophthalmology, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
²Department of Hematology, Amsterdam University Medical Centers, Amsterdam, Netherlands

Kristine Anne Karkoska, MD, MS¹, Russell Sawyer, MD^2* and Hyacinth I Hyacinth, MD, PhD, MPH³

¹Division of Hematology/Oncology, Dept of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH
²Department of Neurology and Rehabilitation Medicine, University of Cincinnati Medical Center, Cincinnati, OH
³Department of Neurology and Rehabilitation Medicine, University of Cincinnati, Cincinnati, OH

Franklin Njoku, MD, MPH^1*, Norma Pugh^2*, Marsha Treadwell, PhD^3*, Jeffrey A. Glassberg, MD⁴, Abdullah Kutlar, MD⁵, Robert Gibson, PhD^6*, Nirmish Shah, MD⁷, Victor R. Gordeuk, MD⁸, Lewis L. Hsu, MD, PhD⁹, Jane S Hankins, MD, MS¹⁰, Allison A. King, MD, PhD, MPH¹¹ and Julie Kanter, MD¹²

¹Comprehensive Sickle Cell Center, Division of Hematology and Oncology, University of Illinois at Chicago, Chicago, IL
²RTI International, Research Triangle Park, NC
³Children's Hospital and Research Center, Oakland, Oakland, CA
⁴Division of Hematology and Oncology, Department of Medicine and Department of Emergency Medicine, Mount Sinai Medical Center, New York, NY
⁵Department of Medicine, Sickle Cell Center, Augusta University, Augusta, GA
⁶Medical College of Georgia, Augusta University, Augusta, GA
⁷Department of Medicine, Division of Hematology - Duke Sickle Cell Comprehensive Care Unit, Duke University Hospital, Durham, NC
⁸Sickle Cell Center, Division of Hematology and Oncology, Department of Medicine, University of Illinois at Chicago, Chicago, IL
⁹Pediatric Hematology/Oncology, University of Illinois at Chicago, Chicago, IL
¹⁰Department of Hematology, St. Jude Children's Research Hospital, Memphis, TN
¹¹Washington University School of Medicine, St. Louis, MO
¹²Lifespan Comprehensive Sickle Cell Center, University of Alabama Birmingham, Birmingham, AL

Amy Parker Ruhl, MD, MHS^1*, Ruba Shalhoub, MS^2*, Neal Jeffries, PhD^3*, Alexis Leonard, MD^4*, Emily Limerick, MD^3*, Amisha Barochia, MBBS, MHS^5*, Matthew M. Hsieh, MD⁴ and Courtney D. Fitzhugh, MD³

¹Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Washington, DC
²Office of Biostatistics Research, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD
³National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD
⁴Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD
⁵Pulmonary Branch, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD