Rim Abdallah, MD^*, Leonard Chen, MD, PhD^*, Cathy Conry-Cantilena, MD^*, Kamille West, MD^* and Willy A. Flegel, MD

Department of Transfusion Medicine, National Institutes of Health, Bethesda, MD

Victoria Brooks, BS^1*, Oluwalonimi Adebowale, BS², Victor R. Gordeuk, MD³, Sergei Nekhai, PhD⁴ and James G. Taylor, MD⁵

¹Department of Microbiology and Immunology/Center for Sickle Cell Disease, Howard University, Washington, DC
²Howard University College of Medicine, Washington, DC
³Sickle Cell Center, Division of Hematology and Oncology, Department of Medicine, University of Illinois at Chicago, Chicago, IL
⁴Center for Sickle Cell Disease and Department of Medicine, Howard University, Washington, DC
⁵Center for Sickle Cell Disease, Howard University, Washington, DC

David J Hermel, MD, Elisa Quiroz, MD, Samantha R Bagsic, PhD^*, Carrie L. Costantini, MD, Alan Saven, MD, James R. Mason, MD^*, Zhubin Gahvari, MD, Emily Nagler, MD and Kathryn Bollin, MD^*

Scripps Clinic, La Jolla, CA

Cristina Sanz, MD, PhD^1*, Anabel Faundez, Registered nurse^2*, Anna García Carulla, Registered nurse^2*, Marta Rodriguez Aliberas, Md^3*, Anny Coromoto, Md^4* and Arturo Pereira, MD, PhD^5*

¹Transfusion Service, Hospital Clínic, Barcelona, Spain
²Hospital Clínic, Barcelona, Spain
³Transfusion Service, Hoapital Clinic, Barcelona, Spain
⁴Hospital Mutua de Terrassa, Tarras, Spain
⁵Hemotherapy and Hemostasis Department, Hospital Clínic, Barcelona, Spain

Gabriel Salinas Cisneros, MD^1*, Naomi Luban, MD^1,2, Jennifer Webb, MD^2,3 and Robert Sheppard Nickel, MD, MSc^1,2

¹Children's National Hospital, Washington, DC
²George Washington University School of Medicine and Health Sciences, Washington, DC
³Children's National Health System, Washington, DC

Kristin M Reddoch-Cardenas, PhD^*, Colby McIntosh, BS^*, Cheresa Calhoun^*, Gema Barrera, MS^*, Stephanny Lizarraga^*, James Bynum, PhD^* and Andrew P. Cap, MD, PhD

U.S. Army Institute of Surgical Research, JBSA Ft Sam Houston, TX

Catherine A Klapheke^*, Chelsea Milito, MD^*, Hannah L McRae^*, Neil Blumberg, MD and Majed A Refaai, MD^*

Pathology and Laboratory Medicine, University of Rochester Medical Center, Rochester, NY

Steven Gremel Schauer^1*, Andrew Fisher^2*, Matthew Borgman^2*, Andrew P. Cap, MD, PhD^3,4 and James Bynum, PhD^4,5*

¹US Army Institute of Surgical Research, Fort Sam Houston, TX
²US Army Institute of Surgical Research, San Antonio, TX
³University of Texas Health, Department of Surgery, San Antonio, TX
⁴U.S. Army Institute of Surgical Research, JBSA Ft Sam Houston, TX
⁵Department of Surgery, University of Texas Health, San Antonio, TX

Richard Curtis Godby, MD, Ashton Kornbrust^*, Denis Noubouossie^*, Jose Lima^*, Marisa B. Marques, MD and Rance C Siniard, MD^*

Division of Laboratory Medicine, Department of Pathology, University of Alabama at Birmingham, Birmingham, AL