Giorgia Bucciol, MD a, Sarah K. Nicholas, MD b, Pier Luigi Calvo, MD c, Andrew Cant, MD d, J. David M. Edgar, MBChB BAO, FRCP, FRCPath e, Teresa Español, MD, PhD f, Francesca Ferrua, MD g, h, Miguel Galicchio, MD i, Andrew R. Gennery, MBChB, MD d, Nedim Hadzic, MD, PhD j, I. Celine Hanson, MD k, Gustavo Kusminsky, MD l, Andrzej Lange, MD, DrMedSci, FRCP m, Fanny Lanternier, MD, PhD n, o, p, Nizar Mahlaoui, MD o, p, q, Despina Moshous, MD, PhD q, Zohreh Nademi, MD, PhD r, Benedicte Neven, MD, PhD p, q, Matias Oleastro, MD s, Fulvio Porta, MD t, Paola Quarello, MD u, Marcelo Silva, MD v, Mary A. Slatter, MBChB d, Elena Soncini, MD t, Marek Stefanowicz, MD w, Francesco Tandoi, MD x, Mikołaj Teisseyre, MD, PhD y, Troy R. Torgerson, MD, PhD z, Paul Veys, MD, PhD aa, Katja G. Weinacht, MD, PhD bb, Beata Wolska-Kuśnierz, PhD cc, Jacques Pirenne, MD, PhD dd, M. Teresa de la Morena, MD z, Isabelle Meyts, MD, PhD a
a Laboratory of Childhood Immunology, Department of Microbiology and Immunology, KU Leuven, and the Department of Pediatrics, University Hospitals Leuven, Leuven, Belgium
b Solid Organ Transplant Immunology, Section of Immunology, Allergy, and Rheumatology, Baylor College of Medicine and Texas Children's Hospital, Houston, Tex
k Immunology, Allergy and Rheumatology Section, Baylor College of Medicine and Texas Children's Hospital, Houston, Tex
c Pediatric Gastroenterology, Department of Pediatrics, Regina Margherita Children's Hospital, AOU Città della Salute e della Scienza, Turin, Italy
u Pediatric Oncology-Hematology, Stem Cell Transplantation and Cellular Therapy Division, Regina Margherita Children's Hospital, AOU Città della Salute e della Scienza, Turin, Italy
x Liver Transplantation Centre, General Surgery 2U, Department of Surgical Sciences, Molinette Hospital, AOU Città della Salute e della Scienza, Turin, Italy
d Great North Children's Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, and the Primary Immunodeficiency Group, Institute of Cellular Medicine, Newcastle upon Tyne University, Newcastle upon Tyne, United Kingdom
e Regional Immunology Service, Royal Hospitals, Belfast, United Kingdom
f Immunology Unit, Vall d'Hebron University Hospital, Barcelona, Spain
g Department of Pediatric Immunology and HSCT, Great North Children's Hospital, Newcastle upon Tyne, United Kingdom
h San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), Pediatric Immunohematology and Bone Marrow Transplantation Unit, San Raffaele Scientific Institute, and Vita-Salute San Raffaele University, Milan, Italy
i Allergy and Immnunology Service, Hospital de Niños VJ Vilela, Rosario, Argentina
j Pediatric Center for Hepatology, Gastroenterology and Nutrition, King's College Hospital, London, United Kingdom
l Stem Cell Transplantation Unit, Austral University Hospital, Buenos Aires, Argentina
m L. Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, and the Lower Silesian Center for Cellular Transplantation with National Bone Marrow Donor Registry, Wroclaw, Poland
n Service of Infectious and Tropical Diseases, Necker-Enfants Malades University Hospital, Infectiology Center Necker Pasteur, Paris, France
o French National Reference Center for Hereditary Immune Deficits (CEREDIH), Necker-Enfants Malades University Hospital, Infectiology Center Necker Pasteur, Paris, France
q Pediatric Hematology-Immunology and Rheumatology Unit, Necker-Enfants Malades University Hospital, Infectiology Center Necker Pasteur, Paris, France
p Paris Descartes University, Sorbonne Paris Cité, Institut Imagine, Paris, France
r Immunology Department, Great Ormond Street Hospital for Children, London, United Kingdom
aa Bone Marrow Transplant Unit, Great Ormond Street Hospital for Children, London, United Kingdom
s Rheumathology and Immunology Service, Hospital Nacional de Pediatría JP Garrahan, Buenos Aires, Argentina
t Pediatric Hematology Oncology and HSCT Unit, Spedali Civili, Brescia, Italy
v Hepatology Unit, Austral Hospital, Buenos Aires, Argentina
w Department of Pediatric Surgery and Organ Transplantation, Children's Memorial Health Institute, Warsaw, Poland
y Department of Gastroenterology, Hepatology, Feeding Disorders and Pediatrics, Children's Memorial Health Institute, Warsaw, Poland
cc Immunology Department, Children's Memorial Health Institute, Warsaw, Poland
z Department of Pediatrics/Immunology, University of Washington and Seattle Children's Research Institute, Seattle, Wash
bb Department of Pediatrics, Division of Stem Cell Transplantation and Regenerative Medicine, Stanford School of Medicine, Stanford, Calif
dd Abdominal Transplantation Surgery, Laboratory of Abdominal Transplantation, University Hospitals Leuven and KU Leuven, Leuven, Belgium